Not planning on the disposal stuff anytime soon, although it is planned for pre-1.0. There's just other more pressing things.
You can drop the items out of your inventory, though, and if they fall on each other they all go into a single bag.
In terms of the lower-tier gear, that's already showing up with colored backgrounds to make it obvious which ones are older, etc. I can't remember if commodities also do that, but I think so. Anything with a big red background is old.