Allow Trundle to cast Frozen Domain while moving.
I've been playing a bit of Trundle lately, and always feel like he shouldn't stop moving when casting Frozen Domain. It seems minor, but making him able to cast his W without interrupting his movement could make him more fun to play without affecting his strength level greatly.
EDIT: Apparently I'm dumb and this is already how Frozen Domain currently works.
becomes incredibly strong and such, a small window of opportunity existing against him before it comes up is necessary for game health. Give him a small stun on E knockup, allow his pillar to block more defined areas or increase the duration of his R.