Pretty content with the 1/48 scale aircraft. Here's what I'd like to see:
1/200, 1/144 or 1/72 scale air tankers (fire)
And IF we added cars/trucks:
More 1/20 early F1 or GP cars
1/24 or 1/25 brush rigs
54 dodge power wagon
2013 Boss 302 ls in 1/24 or 1/25 (its pesonal)