But hallways!
#Trolling
Seriously, as much as I love me some Rebels, the Tantive IV never struck me as a toy I wanted. It is, for all intents and purposes, just hallways guys shoot at each other in. While I want them, I think that's something far more suited to GTP to pull off.
The barge I think works for so many other people because it's something almost designed to fit on a shelf as a large display, but it's all encompassing, the scale isn't absurd at all... it's got everything going for it. It's really quite shelf-like in its displayability. While I think the idea of stackable interlocking hallways works for that, I think it isn't an avenue Hasbro will want to explore. They'll want something more like a large "shape" that has lots of environments to it. As such, my interest in anything like that will depend a lot on what it looks like. I can personally see myself not supporting quite a lot of designs that could come out.
That said if they did random interlocking "scenes" from anything in a customizable format, I'm in, but I don't expect that. I'd be surprised by that.
Scale ships, that is 1/20-ish (scale's arguable on so much) scale, would have my attention for sure. A Slave-I would be large, but not Barge Large I don't believe. Y-Wing and X-Wing would definitely be doable as the Hero X-Wing is actually larger than 1/20 scale. I'm interested and would wholeheartedly get behind those, but I also don't believe that's where Hasbro wants to go. I could be wrong. It'd be like UCS Lego type stuff but for Hasbro. Any OT starfighter would have my full support.