Hextexh Amumu

Could there be any chance for the gemstone exclusive skins to have a period where they r rp purchasable before going into gemstone. Amumu was my original main and still one of my favorite champs and i tried so hard to get every skin and eventually even got Vancouver but now i have to hope to eventually get 10 gemstones or it to drop from a box which both have such a small chance of happening that it will take so long it wouldnt even be worth it in the end. Darkstar Cho was rp purchasable at the start so i was able to get it and complete my cho collection but now i have to basically give up on amumu.