Depends on your needs. If you're selling a phone as a set of individual component parts, I'm never going to buy the latest/greatest camera because I don't use my phone for that. That means that over the 5 years I own this hypothetical phone you don't need to make all those extra cameras. Also casing and other elements that would stay from version to version.

Do I think this solves e-waste? No, but it would be nice to have some of these options.