You'd find 6mm a much more rewarding scale for you talent!
No, I did that for a couple of years, and found the rivalry between GHQ and CinC on one end, and Scotia and Heroics and Ross on the other end offputting.....had plenty of comments about me wasting my time on Heroics and Ross while "GHQ was clearly superior". Yes, if you discount the fact they are goddamn expensive. I've sold almost everything since and put some of the money back into 3mm and my euro goes a lot further in these guys, and I can use my own 80x80 small table to game a good midsized game with. Frankly, the smaller it is, the more fun I have doing them up proper.
But to each their own, I guess..