It has probably been thought of and mentioned before, but a great suggestion for a new RouterBoard Product:

Take the RB750 and build in a low power 2.4 RF card (a la RB411R) with ROS level 4 or 5 to function as an AP. Build on a small omni antenna.

That would make a great wired & wireless customer premises router for home and small business applications.

I would buy two - three for myself, if they are 11n. (working stable)