I have been wanting something similar, but winkeyless, the numpad traditional with 2 units 0 and all the arrow, page, home, end, delete and num lock key where they are usually and one column of macro keys would be good enough. Would need to be hardware programmable for the sake of the macros so software don't need to be installed for them to function, only to assign them.
Or essentially, fix everything that sucks about the Black Widow, and you would be golden.