Yes, I know Kurona does this, but I find the candy look of Kurona Bags quite jarring. Any chance of implementing some of that functionality in ForgeUI?

Yeah, I want to do this, but I don't have any time at all lately, so doubt I will be able to do this any time soon.

It's probably not trivial to implement either, but it'd be pretty awesome. Just leave the issue open until you find the time and motivation, or perhaps someone else can try to implement it.