Yeah, and last time it looked like we were going to get drops in a month between tier shifts, all 7 of them got enough usage to stay NU, both in the following month and the one after that which had the tier shift. I don't really have my hopes up.
SwedishBiscuit, we've had this system in place since the old PS server (and all its logs) were lost at the start of ORAS. I'll have to check into the specifics of Torn-T, but keep in mind second-month quick-rises are based on the two previous months' stats combined (ratio of 5-1).
Edit: You are correct. Torn-T had enough usage in April to rise. Not sure why it didn't. Might have accidentally applied the one-month threshold.
on the other hand it also likely means you have a high percentage of teams built by people just clicking things that are listed in the tier in teambuilder, since that tends to have a pretty large effect on buffing up the usage of mons that should drop.
given im fairly sure there's an observable change in usage of mons when they change tiers, even at the 1630 level, they don't seem to have enough of an idea (or at least a couple percent of them don't)