My Solution is only temporary. I myself don't find the 3x3 as limiting as most people because I make do with what I have. :)
In contrast, WT has no easy way to make a combat system within it (Bitsy does, as the guy I linked to a couple times on forums has shown with his RPG System).
TRS is the only one I've found so far that implements combat due to it being built right in it. That's another thing (besides graphics) that drew me to it so fast. I can have combat in my games or I don't have to, or a bit of both.
TRS gives me that freedom despite being more limited than even Bitsy, so I don't really focus as much on the 9-room limit, since I don't mind splitting rooms up, as it's the easiest way to get more screen real estate out of what I have. :)
Nice feedback though, VM81, especially your idea for a 2x screen canvas.