I appreciate that you're being open to feedback for the 2019 Circuit and willing to hear any positive input from the community.
I am rather keen on the topics of tournament representation of Ubers, so I will be as detailed and as constructive as possible for each point raised in this post.
- an early-ish UPL (likely immediately after Exhibition)
I agree with the notion of an early UPL - This should almost be the case for every year. I feel like a late February/Early March is close as optimal as possible, as it allows to accommodate other circuit tournaments such as Ubers Winter Seasonal being concluded or in the very late stages. Pentathlon (if we go off last years circuit, I don't know if you have any plans to move this or not) would have just started and this could easily co-exist with the UPL. Furthermore If you look at official tournaments such as SPL also exist in this time period would also be coming to conclusion which is also beneficial, as SPL Players would have had adequate time to settle into playing/dedicating to SPL etc and would be more inclined to participating in UPL.
I understand some players have been calling for a Late dec/Jan UPL and now with exhibition I honestly don't feel this is beneficial to the quality of the tournament, as the period is rather tournaments heavy (official and Ubers circuit, Exhibition, Beginning of SPL) and this is also the exams period for a majority of countries.
- A team tournament + ssnl running around "Ubers Open" to compensate for the lack of it and address the demand for another team tour after UPL (most likely a Snake format or something but tbd)
This point reads to me as two different topics of interest, so I will preface them as such:
New team tournament
An additional team tournament to me seems like a great idea, there has also been a demand from several people who have voiced this opinion. Two team tournaments a year to me seems like a good idea to increase development of the community and competitive representation of Ubers. I understand you're looking at the summer gap in your post, but you also have to consider the autumn / early winter months - as there could indeed be a gap here, depending on whether we get represented in the official Snake Draft or not. More-so I feel Team tournaments don't have to be ultimately set in stone now as a schedule is concerned. Unlike the circuit tournaments such as Seasonals, etc since they don't contribute to the championship points, but could be introduced with adequate notification of when they are going to take place in the year.
I understand there is also the discussion of Ubers world Cup (UWC) vs a Ubers Snake Draft (USD) as well, so I will provide my opinions on both formats. I understand the world cup format seems entirely unique to players, however I feel it is inherently flawed as its core, despite its uniqueness compared to a snake draft. Why I feel it's more prone to flaws? The region based locking of players can potentially cause arguably unbalanced teams much more considerably than a Snake Draft format would.
I see 'World Cup' format as something that only truly works in a official setting such as World Cup of Pokemon due the larger playerbase of OU / Old Gens OU while being an official tournament that attracts a greater amount of signups, while being a unique idea, the niche of World Cup formats tend to struggle in communities with smaller representations such as Ubers, NU and LC etc. Snake Draft as there is more of a degree of draft preparation/planning from managers to create their solid teams and the lack of restrictions on players, making team picks more versatile.
In a penultimate decision, if the majority care more about raw competitiveness and the quality of the tournament a Snake Draft format feels like the way to go in regards to an additional tournament, but the uniqueness of a World Cup Format should also be considered for additional variety, but it is crucial to weigh the pros and cons of each format.
New tournament to replace Ubers Open.
Judging by the context of the point above, I am going to assume this will be another Type-A tournament like a Ubers Seasonal. To me, another 'seasonal' should not be the answer as it overlaps with the Summer Seasonal already, if we go by the 2018 tournament schedule:
Summer
Summer Seasonal (May to August, Type A)
Ubers Generations Team Tournament (late June*)
Smogon Grand Slam - Ubers Open VI (July to September, Type A)
If you are a proposing there is a Type-A tournament gap. moving away from the seasonal format honestly seems plausible for another Type-A tournament such as a Ubers Majors Tournament or perhaps a ladder tournament - This allows to keep the demand of what is expected of a type-A and have players adequately compete in a tournament worthy of Type-A, while bringing additional variety to the circuit.
The idea of Ubers Majors is identical to a tournament that has occurred in another tournament: UnderUsed Majors -
https://www.smogon.com/forums/threads/underused-majors-iii-signups.3641493/
I feel this is a tournament format that is worth looking into and adopting for Ubers. Since Majors could feasibly replace the Ubers Open in terms of prestige and I like the variety that Majors is able to offer for our circuit. I also understand that a ladder tournament is probably not the most feasible option, due to the demand it could have on players trying to qualify and the administration behind the playoffs procedure for Type-A points such as players who qualified (do they get type-A points etc, I'm no expert in this so please forgive me if this point is off).
- more tournaments rather than less, i'll be more towards tournament overlap and multiple running at once over leaving gaps or waiting around (type A overlap will still be kept to a minimum)
I honestly don't have much to say about this point, going off my thoughts above, as obviously I've already suggested the possible introduction more tournaments, especially the new team tournament idea. There is always going to be times when tournaments overlap, and this seems completely acceptable, for example a team tournament is always going to be in the juxtaposition of another circuit tournament throughout the year.
i'm looking at making type C tournaments common and easy to start up and i'd like to better clarify what would make a type C tour, because it is a bit of a vague idea so far and we didn't have any in 2018. being an easy to throw around tier of tournament should result in a scattered but reasonable amount rather than zero.
These feel like a grey area to me, what should qualify as a 'Type-C' tournament is seems quite vague and is not completely defined. Though I do like the idea of start-up tours, I find this rather unique. This gives other members of the community to have attempts at hosting tournaments and gain experience with doing this, I hosted ORAS Ubers Cup with minimum experience and I found it quite enjoyable and would like to believe it was hosted adequately.
Type-C also gives good space of ideas to be broadened and explored, these seem like niche tournaments to me more than anything. Some ideas that I feel would be good for Type-C tours stand out as 'DPP with Arceus' or GSC Ubers which is completely left out of the circuit for instance, so it would be nice to introduce some new, fun ideas to players while still keeping a sense of competitiveness.
In conclusion, I think the 2018 circuit was actually good as a start, and I have high hopes for the 2019 circuit and improvements to follow. Overall I think the fundamentals of the circuit are good, what makes the Ubers circuit unique is the good portion of representation of older generations such as ADV, DPP, BW, ORAS even from the perspective of someone who is considered a 'Current gen player' and I hope this is one aspect that truly stands in the foundation of the Ubers circuit. The old gens representation means new and old players alike are able to compete at high level and this also caters and attracts a broader selection of players to our circuit.
I hope this post doesn't come off as 'do this, do that' that isn't the intention of this post at all, but more of to keep options and ideas open for the future of the circuit and I tried to be constructive and detailed enough and gave my honest thoughts on the points that have been raised.