Future Chroma Packs?

So, as a fan of a few particular champs, I can't help but notice the lack of skins (or available skins) that are around, and since riot obviously only makes skins for the same 4 champs over and over, I want them to make chroma packs for a few champs. I have 3 that I want ( , , ), but since this is a discussion, put your favorite champs in the comments so that riot will look at this post.