Why are these not things. (Skins we need)

Multiple amazing skin ideas have been thrown into the forums that either go un-noticed or get hyped while receiving not much attention from rioters leaving people discouraged at the thought of the skin becoming real, the most current one being the ElderWood Kindred Skin:

http://boards.na.leagueoflegends.com/en/c/skin-champion-concepts/5Q77XQ6Z-elderwood-kindred

Note: I did NOT create this concept how ever I think it deserves a lot of praise and at least acknowledgement from some rioters seeing as it fits the ElderWood theme perfectly and brings in a much needed Kindred Skin seeing as how her only currently available skin fell flat for a lot of players.

Any-who bringing it back to a few ideas that have come and gone in the forums.

StayPuffed Zac: I was having a discussion with a friend and we had a seemingly great idea for a Zac skin. I am aware its probably not an original idea but or anyone who has watched the original Ghost Busters Movies there was a demon Stay Puffed Marshmallow Man who terrorized the protagonists, now I am aware of copyright problems but making a marshmallow based skin for Zac on the other hand wouldn't spark many problems. The globlets would be marshmallows, his passive form could be mini marshmallows moving towards a mug of hot coco, and his ult would be along the lines of turning into a large marshmallow and bouncing from one face of the cylindrical figure to the next. I really do wish I had the artistic and technological capabilities to make a concept of this and put in a visual but I really do like this idea.

DishWasher Zed: Now I recall a few years ago someone commented a Riot PatchNotes Thread claiming we needed a DishWasher Zed skin, and he is correct. Scrub Sponge blades, his Q being a plate, his shadows being made of suds or bubbles, and the mark of death on his ult being a bar of soap, this would make an amazing Halloween skin! Imagine being assassinated by zed while he wears an apron and spams his laugh animation over your body.

Arcade Ezreal: I am aware of the over saturation that is the Ezreal skin base, I mean he has eight skins! Eight! While Kindred is sitting on a gold mine of a skin concept we have eight Ezreal skins. I am aware of supply and demand, if no one wants a new Taric skin they wont make a new Taric skin and many players eat up Ezreal skins because he has a very large following, anways personal rant aside, allow me to show you a concept of Arcade Ezreal.

http://st.elohell.net/public/chill/692dd6ad53613901c7067a3704b5f1ea.png Note: I did NOT make this concept or art. This skin would be amazing and no Ezreal main could tell me they wouldnt enjoy murdering enemies with rainbow orientated abilities.

If any of these ideas I have mentioned aleady have concept pages please link them so I can give my support, and please support any of the listed ideas if you would like to see them ingame.