These are really two requests that cover common ground
1) Instead of having to dig through textures one at a time, the texture box should resemble something like windows explorer's in thumbnail mode. The closest analogy would be the map screen. Laboriously going through textures one at a time is made worse when you have to scroll through and increasingly huge drop down box. Also put in some kind of folder browser so we can categorise them. A workaround right now is putting NOTHING in my textures root and only moving anything there that I might work with i.e. a pallette but this is a pain in the ass and the current system encourages disorganisation.
2) Same as above with animations (well really gestures). I have my animations categorised, then further categorised into poses, looped or one time play etc.