Chromas feedback
Chromas aren't really worth the cost right now, especially for base model skins. The feature has potential, but it could be so much better with a few tweaks. I don't mind the price, but allowing you to buy a single Chroma for a champion and have it work with all of their skins would be a nice feature. The work involved in making a Chroma for every skin wouldn't be TOO much work for the cost - palette swaps are incredibly easy to make, and just making sure the particular color swaps don't look bad (or determining how the layers should be colored) is nice.
It's a great way to expand a champion roster, but the limited colors are also a bit meh. For the Lee Sin one, for example, I can get how it would be kinda hard to give us a color wheel to choose whatever color from (because his Dragon design changes too), but with a little work it could easily been done. Some people would like a Cotton Candy pink Lee Sin or Twitch - give us some options.
Otherwise, for the cost, not worth it. You can get better skins that look nicer for comparable costs.