To supplement the get-to-the-point post I made on the last page... well, there was Lohgock, who even though was apparently mostly "you" I don't think is a bad player and also has good experience playing VGC and other formats, too, so I think that one is mostly irrelevant to the point here. Your other positive-record examples would be Laga, Mizu, and Finally, and before the draft last year I wouldn't have argued with you placing Finally above a lot of VGCers (would have argued Mizu but I think she proved she belonged up there.) The only one returning is Laga who probably should given another "VGCer" a positive record and maybe not had one himself, considering he got a defense boost on every single Diamond Storm and
still only had a ~30
% chance to beat Biosci and got it week 1. He also got
an incredibly pivotal freeze vs TFC and
got a flinch vs SoulSur where he probably lost if he didn't flinch that very turn. Also
had pretty much lost to Zubat if Zubat hit either of the two Rock Slides. See why I'm a bit skeptical of you using records / history for this? I also definitely would not argue the same case for Finally or Mizu after watching all of the games from last year, they both finished right around where they should have record-wise. I'm not here to just trash anyone and everyone who plays the tier constantly and I'll vouch for a player regardless of the "group" they're in (like I said, this isn't an us-vs-them thing like you see it as), it's more that I'd be very much concerned about anyone who's good at Doubles OU and pretty much nothing else as it's a pretty comparatively weak tier competitively as a stand-alone.
That being said, the people you listed in tier 1 are probably worth a pickup but I'd have concerns about every single one of them vs stiffer competition ...if that competition actually is dedicated enough. That's a point that managers have to really gauge well if they're going to go after people outside of the regular Doubles OU players and I think will be the hardest to assess (I guess I can help with this to an extent if anyone needs it). Also a fair stereotype / knock on players coming in to play Doubles who don't have a lot of ties to Smogon. Beyond that, though, I think the potential of bringing in someone to try is worth it, and it isn't very expensive to do so if you do your homework as a manager. Not saying it's the best option for every team, I think with the general apathy problem of people who don't stay dedicated to the tier it'll be worth it to pick up some steady players, but in terms of drafting potential, good value and high potential > low ceiling + high floor with neutral value. If the managers can't find anyone dedicated enough who's good enough to threaten who you listed then I see no reason at all to not pick them up. There's a certain point where it becomes worth it.