I would like to add my support to this idea, I can see several interesting directions it could take.
One thing I would like to throw out there is that in my gaming group we typically set up the streets and buildings etc at 45 degrees to the table.
In Mordheim and Infinity we find this really helps with limiting the dangers of ranged weapons going straight into deployment zones while still allowing for corridors of significant length.
This somewhat limits the usefulness of TLX road'ing tiles as triangles are hard to manage (buildings are still great as you can position them however you like)
So some sort of road'ing with with possibility for "triangle" connectors would be amazing.
Anyway, just a thought
Cheers,
) had a system of interlocking paper tiles without foamcore. Not sure if it's ok to show one of those tiles here, maybe the man himself can chime in on this.