Very likely.
And as you've also noted:
Now, in case anyone is like me and has switched to digital for a while already (I know plenty of folks who have done just that), these very specific problems are either not existing or have been solved already. And as far as the Stadium goes, I can't see much real problems being solved.
Yes, editing is easier (I'd actually love that a whole lot myself), amp models are sounding better (wouldn't mind, either), but none of these should be much of an issue for anyone serious about their existing digital rigs (it certainly isn't for me).
So why would any of these kinda folks switch to a Stadium?
And fwiw, in general, I'm pretty much *the* target customer for a device such as the non-XL Stadium. Compact to travel with me anywhere, capable enough to suit any kinda gig, sounding great to fantastic. And for the most gigs I play, an all-in-one unit would be a somewhat better solution than what I currently use, as it'd be easier to program, keep track of things and save dedicated patches per each situation. But as I've sorted things out already, that's just not much of an issue anymore (and I think it's pretty much the same for quite some others).
So, in a nutshell: Apart from some easier handling and curiousity, there's no reasons for me to buy something else. And these aren't worth €1.800.