Here's my answer the question of "what does it hurt to wait?"
Potentially, a lot. Or not at all.
The issue is that, if we wait five weeks to start cultivating the Gen VI metagames, then that puts us
five weeks behind in cultivating our metagames. That's five weeks' jump we could have in developing analyses, performing suspect tests and bans, and five weeks more of waiting for the metagames to "settle down" enough to be stable (at which point we can start on the lower tiers).
The assumption, I feel, that
Aldaron and others have been making is that we're the only game in town, and if we tell the community that they're going to have to wait five weeks, then they'll wait five weeks. And this time around, that might well be a good assumption.
But back in the early Gen V days, however, I think that if Smogon had had a five week lead in developing the Gen V metagames, then I think that the early Gen V competitive Pokemon landscape would have been vastly different.
Back then, I wasn't yet as involved in the competitive Pokemon community as I am now. And
from the outside, it seemed like Smogon was fading into irrelevance. PO had their own community, backed by their own simulator and the most popular server *on* that simulator. When PO started putting out their own tier lists, there was considerable discussion in, say, the Youtube community as to whether to follow their tiers instead of Smogon's.
Luckily, Smogon ended up winning out, due to having a "more competitive" PO server and having more well-thought-out tiering and suspect tests, so that PS was the final nail in the PO coffin, but it certainly could have gone the other way.
Then again, that's just my perspective.
There also seems to be the concern floating about that we only
think we know what will be legal come Pokebank. But while it's possible that Nintendo/Gamefreak will throw us a curveball and, say, make gems purchaseable items or not let DW Pokemon be transfered, I (1) don't think it likely and (2) think that our goal should be to get as close to the permanent meta-game as quickly as possible. If we have to make some adjustments when Pokebank comes out, that's fine, but honestly, if I were a betting man, I'd be putting a lot of money in Pokebank working EXACTLY like we all expect it to work.
tl;dr -- We have a lot of forward momentum right now, with regards to the most popular simulator and people champing at the bit to write Gen VI analyses. Telling everyone to chillax and sit on their hands for five weeks is a huge tactical mistake, IMO.