How to make people not farm hextech cases and keys

Ok, so I have thought long and hard about this and here it goes.

If you wan't hextech crafting to be successful, make the skins shards you get have some value other than the chance to get a skin. Like, maybe once you get the skin, and you unlock it to permanent, allow you to either take the skin or get half the cost of the skin in rp. (but this can only be done if you spent rp on the cases and keys, to avoid giving away free rp of course.) Once people see that you can earn rp, it would give them incentive to actually buy them, and what would most people spend the rp on? More cases. Make it more like counter strike, and give people something to earn out of it, rather than just the skins. Because what if you get those crappy skins constantly, and you reroll them into something like assassin master yi, or something you never play? You can just get half the rp cost of it!

Thanks for reading! That's just what I was thinking would give people incentive to actually buy cases rather than farm them, so have a wonderful day!