As in, skins that share the same theme as the base skin, except it is the character at the highest potential peak of their own personal power? Spirit Guard Udyr and Blood Lord Vladimir come to mind as examples for this. I would be interested in seeing what champions look like at their mightiest.
Pre. Death. Sion.
You forgot Final Boss Veigar
But, alas, for them to have a final form, they need to have a position where it makes sense for them to reach a visual peak of performance as well.
For example, Udyr makes sense because he has to fully become one with the animal spirits as opposed to mimicing them. Blood Lord works because Vlad not only surpassed his teacher but he owns his own domain (possibly).
I can't imagine someone along the lines of Teemo having his final form (because Omega is a what if he lost everyone), and Satan Satan is a meme skin.
What champion do you think have an "evolutionary" potential with their capabilities. Varus is definitely one of them (since his final form is him being fully corrupted by the Blight)
Moment of Death Olaf
Grown up Nunu
Brand Brand
General Garen
Smoker Graves
"Now with real voice lines" Rammus
Seer Lee Sin
Heroic Poppy
Wildwood Zyra
Beauty Pageant Urgot
Redeemed Soraka
Mrs. Shyvanna Lightshield
Tall Veigar.
I have a pretty good feeling that Elementalist is this for Lux.
Yeah definetly, and it's the kind of thing that can run the gambit between "what if" scenarios and actual lore follow throughs. Poppy recognising she's the hero and in turn being recognized by Demacia could lead to an awesome skin where she's in imperial Armour and stuff.
In general, more skins that are canon or could be canon in the lore would be awesome. Hand of Noxus Sion, human Lissandra, Nasus, Azir, Renekton and Xerath, etc.
Adult Gnar. He'd still be cave yorlde, but he's a kid. I want to know what he'd be like when he knows he's the monster.
Eldritch Nautilus. He's unleashed the power inside the suit.
Befriended Amumu. he can still cry but tears of joy.
Chaos Queen Jinx. Has taken over piltover as he own playground.
Joker Shaco. Just do whatever you can to make this similar to Mark Hamill's joker!
Super-Suit Zac. He should get a suit. or at least a cape.
General Talon. He takes the position of General Du Couteau (as he's probably dead and Talon was his personal right hand man. Yeah Kat might want it, but I feel like Talon would get this position while Kat takes a public one to keep the family in power.)
((Alt universe stuff, but still kinda this))
Shadow Shen AKA Shen opened the box of shadows
Eye of Twilight Zed AKA Zed stayed loyal
Overlord 
, where she's had some time to build up her immense power and her particles are literally dripping dark magnificence and power.
Freed 
, where every star looks brighter, and his orbits more violent. His roar having the very essence of creation bursting forth without restraint from his crown.
Freljord Warrior 
, where he is fully armored in true ice-laced armor and his shield is fully outfitted for war in his homeland. Maybe have him be a bit older too.
Longhorns 
, where he is literally a fresh-served steak from Longhorns with a side of A1.
So many possibilities.
I'd definitely like to see such skins for , 
and .
