As someone who's been into BattleTech since the early days with the folded cardboard standups, only one mapsheet design and twelve "official" 'Mechs (well, 13 if you count the Chameleon training 'mech from the rulebook), it has always amused me how the 'mechs are supposed to be about 10-12 meters tall...
I could be wrong, but for war machines weighing between 20 and 100 tons, it seems a tad small. I can see the smaller 'mechs maybe starting that sort of size, but the heavier ones? Just doesn't seem right somehow.
Bearing in mind that most of them are humanoid, it would mean that your average western human adult male would be about the right size of a 1/6th-scale 'mech!
Somehow I just cannot really see a 12" action figure (ie Action Man, GIJoe, the various lines from BBI, C21, Sideshow, Hot Toys etc) sitting "inside my head" and looking "right" for someone supposed to be driving 100 tons of walking tank.
On the other hand, I wonder if any clothes stores near me want to get rid of any display dummies..?

"No, no, no! We're Ethically-Challenged Merchants with Negotiable Morals! We are NOT pirates!" - Capt. Lauren Michaels, owner-aboard IMV Valkyrie