... Like how I'd have a room dedicated to just welding and grinding, so the smoke, grit and slag wouldn't contaminate the rest of the shop.
And, for that matter, a room just for the machine-tool grinders, like the surface grinder and whatnot. Again, so the grit wouldn't contaminate the rest of the machines.
Or all the sheetmetal stuff- box and pan brakes, one of each size Beverly shear, a nice Pexto stomp shear, bead rollers, shrinker/stretchers, a Kraftformer or similar hammer, etc.
Or the blacksmithing area, with two or three forges of various sizes, half a dozen anvils, a 25 and a 50 pound Little Giant, swage blocks, etc.
A clean room for assembling engines and transmissions, a big pallet rack and a forklift to store palletized hardware, and maybe off in one corner, a set of old lineshaft-driven machinery just 'cause I think it'd be cool.
Indoor heated storage for the best cars, outdoor covered storage for the daily drivers, lots of sheds for storage...
And yes, I could do it all- everything I've mentioned- for a million or less.