I did like a week ago but chose not to release it because i got told that I'd get heavily discriminated for putting a load of staff at 0/10 lol and maybe banned :/
Noone's gonna ban you for having your opinions.. Just don't, like, be an outrageous asshole about it, like don't make character attacks and stuff. If you go about it well you'd be fine I imagine. You might want to run it by a staff member first if you haven't just to be sure though, if you did want to post it.
The best thing you can do is make a staff rank list, and dont comment on your tierlist. Even if you put every mod in the F tier, if you post your list only, people will just think it's a joke list, like in the previous staff tier lists. No one will ban you unless you literally start calling a mod mean names