OK, late to the party, but some things I'd love to see:
-- For the stuff that Makers are likely to do, would a combo metalworking (mill/drill) machine work? Cheaper and smaller footprint, at least...
-- Decent (used) oscilloscope with probes (the latter suffer greatly from "tragedy of the commons" problems though)
-- drill press
-- quality solder and hot air rework stations (see "tragedy of the commons" comment above)
(-- and someone to teach people how to use them!)
-- PCB milling machine, like a ProtoMat