Is it possible at all to...

1) ... increase the texture resolution of graphic assets in general? Such as the loading screens? I would like to replace them with something that doesn't look so stretched at 2560x1440 resolution.

2) ... create custom icons for aliases, perhaps with a LUA plugin? i.e. display a picture on the hotbar instead of the letters that appear when you use the /alias shortcut command. I am thinking of adding emote icons. There are no emote icons that you can drag to the hotbar, as far as I can tell. Can you create custom icons that can be dragged on the quick bars?