i could only go for the gunslinger lucian on this list...let me go over the problems...
1 bowser rammus exaists as you now know as King Rammus....Galio is a gargoyle as also pointed out,
nidalee already has a black panther skin which is the french maid?...
a chinese dragon is different from the western dragons shyvana is based on so it's be a dress and maybe a few particales on the dragon form, ain't gonna be worth it.
saber tooth sej would be alright but nothing too exciting,
Perfume Singed would maybe be an alright skin but same tier as the sej...
strongman braum...think of what would be his shield and come back to it. though putting him in a clown costume would be better imo...
candy princess jinx...same as strong man, go into details of what the skin would look like. what does her zap look like, what does powpow and fishbones look like. recall? dance?...
Panda Volibear, we got panda annie and panda teemo and all they really could do for Volibear is make him look like a panda...not worth
Hulk mundo...hulk mundohulkmundohulkmundo...1 there is alread a green mundo skin, Toxic, 2nd they are based both on Dr. Jackle and Mr. Hyde, what more hulk do you want.
Fallen Angel Kayle...Morgana is the fallen angel and kayle is he sister who did not fall...the closest your going to get is eather wing or w/e
Death worm Rek'Sai...just no she's not worm like enough
stichwork gnar...stichwork works with oriana because she is a robot...explain your thought more
gummy bear gnar...this would be a nice silly skin to have, but need more detail
Alien v Predetor...there are already AvP skins look up all the head hunter skins for the predetor and as for alien...gotta pick a better champ then noct...maybe like kha'zix...just because he's most like them and he fights rengar
Steampunk...i'd like to see a few steam punk skins to go with blitzcrank sure...but for elise, urgot and sarah fortune... not so much...urgot just needs a rework before anything
Mortal Kombat...just no...first off lee sin and lui kang are both based off bruce lee...but the ermac might be good if you describe it more...descirbe his attacks and his voidling...and not just "green"...as much as i like green...
Batman theme...highly doubt riot would ever do a clear ripoff these days...they could only really pull it off with king rammus...but Shaco already kind of pulls from the joker...and for harley you'd need a new champion because she uses a hammer...maybe a poppy harley quinn?
Bowser Rammus (Mario theme)
Gargoil Galio
Dark Hunter Nidalee (turns into a black panther)
Chinese Shyvana
Gunslinger Lucan (western theme)
Prehistoric Sejuani (rides a sabor tooth tiger)
Perfume themed Singed
Strongman Braum (circus theme)
Candy Princess Jinx
Panda Volibear
Hulk Dr Mundo
Fallen Angel Kayle
Death Worm Rek'sai
Stitchwork Gnar
Nocturne vs Viktor
Elise
Urgot
Miss Fortune
Ermac malzahar
Kenshi Lee sin
Joker Shaco
