I'd like to see some of those things cost crowns instead of CE (to keep the market balanced).

I don't personally like the idea of mounts (I don't see a need and doubt they would add enough fun to be worth the developer investment), and energy-only utility belt items don't appeal to me because they are far too temporary (unless, like a trinket slot, you could use energy to unlock the use of such items for a month, rather than paying individually per item). Otherwise I like suggested additions.