Well, I can't speak for most users, but a LOT of us have a huge music collection that takes up almost all the phone's memory. That's 30+ GBs of music that has been collected over years and years.
What that means, that most of them don't have metadata or inconsistent metadata.
It's going to be a pain inserting that metadata into 1500+ files. It would take MONTHS and most of us have jobs haha.
Besides, as a user, I'd like to have freedom of how my music is organized and not a piece of software that tells me how to do it.

The way that the tracks are organized is very simple. I just dumped my music folder to .sounds the way it was organized in my previous player (and on my PC):

Pretentious Band - Pretentious Album/Pretentious Song1.mp3
Pretentious Band2 - Pretentious Album2/Pretentious Song2.mp3
Game Soundtracks/Metal Gear Solid 3 OST/song1.mp3

And so forth and so forth.
Since I have my music organized by albums and some misc categories like that, it's much easier to browse through.

Look at the way MediaBox can handle organizing file brosing. Basically like that.

Also, will the interface be faster in the future? Can you make it so it utilizes the GPU for faster scrolling and so forth?

What I really like about this player is that it loads fast, uses minimal resources and looks really awesome. Great eyecandy.

If that simple "Browse By folder" function will be added this might just make me turn over from MediaBox as my default player because of the looks and lower battery drain.