Diana deserves a full VGU. updated model with completely new gameplay. her kit is way too binary as it stands. I'd say keep Q and Passive REMOVE the refresh portion of R BUT add E pull in effect to it (Diana rush to a target and pulls them in+slow). this leaves W and E as two new slots to craft much healthier gameplay while still not straying too far from what current Diana players are used to. W I dont think is worth keeping feels like a pretty filler skill most of the time and something better could be slotted into its place.
Zilean mostly I'd say give Q Bomb and E a charge system then replace W with something completely new and MAYBE look into reworking R. as it stands just "free GA: the champion" isnt all too exciting. I would like to see something a tad crazier with time powers. something like "after a 3 second Channel ZA WARUDO all ALLIEs AND ENEMIES in whatever range for some seconds. frozen enemies are treated as being in stasis and are untargetable/immune even Projectile skillshots get stopped . you just do something good with his time powers a completely unique effect that cant be replicated by any other champ or item
full.VGU. anything less is a tragedy. His kit is just such a big mess with no real direction right now and the ONLY thing he is good for is of course charging in and dragging a person to doom then after that kinda just being a little tickle monster (which turns to slaps on spires)
its so wierd you mention keeping Q but trashing everything else because I think the exact inverse. Pillar and Subjudgate are EXACTLY what keeps Trundle viable into the right comps and make him interesting as champion while providing him a niche (he's a super hard answer to tanks and Pillar is a super useful utility skill that does have a bit of skill expression to it). I'd say Q and W are the worst parts of his kit as they just turn him into a full on-stat check fighter thats not really fun to play vs. Q both mostly serving as just stat modifiers. I would much rather see W effects added to E and W become a completely new skill. there should be more to trundle than just W>right click and spamming Q off CD like Nasus. that gameplay is extremely archaic and a remnant of a simpler time when ALL champions were designed so simplisticaly and made to just run into each face and DPS RACE with auto attacks (Trynda,Yi,Jax,old GP,old Irelia, old Sion,old Aatrox, Xin) .
is also deserving of a full VGU imo but mostly because he is ripe with untapped potential. he has a lot of cool things going on his kit but he needs a facelift,VO work and some modernization to realize it. since the sleep debuff is in the game as of
I would like to see that incorporated into his kit too. sometime about truly making people feel alone and preying on a singular guy. Maybe instead of a death realm Nocturne can drag asleep people into a Nightmare realm where he gets access to some sort of powerful execute or something.