I'd be in. Let me know how I can help. The highest bipolar IC drivers I've found are from Allegro.... 35V 2.5A max. And their unipolar drives go up a little higher amps.
For H-bridges.... There's the Infineon TLE 6209R, 40V 6A continuous/7A peak, pseudo-chopper. Motorola has the 33887 40V 5A continuous H-bridge. These are both for DC motors and won't have microstepping control or translators but it's a start. And they'll need some uP (PIC would be good) for control.