PLEASE increase the vault
My vault is 100% legendary and epic champs. I've increased my champion page but I have OCD and want to keep Champs I'm not working on in the vault, and even then my regular champion page is starting to fill up as well. And an extra 100 spaces isn't going to cut it. It really needs to be doubled, if not more.
It doesn't seem like it would really be that hard to do, it will make you more money and give us more space. Win-win.