Why stop at Chroma Packs?
Could Chroma Packs eventually evolve to include particle changes as well? Sort of like Premium Chroma Packs. Or just Particle Packs. Releasing them as just particle packs could allow people to use a chroma skin in conjunction with a particle pack for a fairly unique outcome. This could also solve the issue of making cool, but affordable skins. I loved Annie's valentine skin, but I wished the particles were pink (like many other summoners). With particle packs, you could release 750 RP skins so that summoners with less money to waste get to enjoy the skin, and then summoners with extra money to waste can further alter the 750 RP skin with a particle pack.