Only one tour game has been played but even a good amount of friendlies in UU with the UUBLs I do genuinely think it's a far better tier to what we have now. Wrap can be a little annoying but sleep seems to resolve some of the issues with it since you can attempt wakes through it and generally a shift in how people view Tentacruel even in the "current" UU with less people opting to run it at all.
If a common Wrap counterplay is going to be attempting to wake I want to bring attention to
this inaccuracy but overall I find Wrap less problematic than the previous iteration of Lapras UU and the additional bulk in the tier (mainly through Lapras) a great addition. Yes it's bulky and two shots like everything, but so did almost everything in current UU without any of them being bulky mons that can actually stomach hits.
If anything I think Hypno may be problematic, not Lapras, but I'm not gonna call to rush suspects after some friendlies and one entire set in UUFPL.
I really, really don't see a reason to delay just officially dropping them. The environment changes drastically with sleep and we're likely gaining something from OU drops that would only further justify dropping them. All delaying it really does is make spotlight run with a format that we're unlikely to be sticking with and giving less time to test them (the next UU tour is Grand Slam, and by then OU will certainly have a new VR).
Even if you're against allowing Lapras and/or Hypno long-term, surely letting them play in spotlight, when we're almost certainly going to drop them one day anyway, would either give you ammo to support suspecting them again, and likely actually permanently removing them from the face of UU, or make you pleasantly surprised that they improve the tier. The timing really makes it hard to justify since the only thing delaying a decision should do is change the spotlight format.