I wish My Shop would take my purchases into account
It's like, yeah, I know I play Jhin and Zoe a lot, but I'm not going to replace Dark Star Jhin and SG Zoe for High Noon and Cyberpop. There's a reason I bought the skins I already bought, and I'm not looking to replace them.
It can see the champions I play, why can't it see the skins I play with and just... not give me a discount on a skin that's a downgrade? I'm not a collector. I'm not trying to own everything. I only really want one skin per champion I enjoy.
And I've been spamming Kai'Sa in ranked without a skin for her yet, and it failed to give me a discount on one of hers. I'm not too torn up about that, since I probably won't buy a Kai'Sa skin until they make one that's something more than a hot girl, but still, it shows the algorithm could use some touching up.