Looking at UWs next. From the feedback received in email form and from this thread, considering limiting weapon to on-tier. I say this because UWXI would require 78 to equip and UWXII would required 79 (completing T10) to equip. It may disarm quite a few being unable to use their UWXI at 77 instead of 78. However, if opinions are strong for it, I'm not opposed.
-Hate
Still think they should be locked to the tier, it make sense to unlocked the ultimate weapon on the tier you cleared, not before clearing it.
However that's certainly a big problem for top end players at the moment so I'll just leave that to them to debate about it. I'm not up there yet so I have no opinion for it.
Whichever way this turned out, in future I believe that UWs for next tier and beyond (T11+) should be locked to clearing the tier.