I have the Seido Evo 4g car dock.
Some things they could improve on
1. Yeah, a standard usb cord would be nice.
2. Maybe releasing just the dock part (not the arm) as it has the standard universal connection.
3. If they do redo the whole thing, just make it sturdier or don't allow for extended batteries. My complain for this only came after I ordered the seido extended battery for the Evo 4g 7 months afterwards. The weight made it creak and vibrate more. Either make the arm sturdier to cope with the weight or just not allow people to add that much weight to the end.