If you were Bill Gates and could commision a new CM

[fluidwill]

Armoured artillery obs, game representation of armoured cars/halftracks/tanks with just mgs and that all important radio..

Ref the point above about targeting the stug round the corner, this exists, its just not very effective, you have to be quite careful a "better" target doesnt get into the gunsights first. You can however "cue up" a target if you know its there and your unit will get it in sight soon, try it, I've not had a great deal of success with it but the facility does exist, its in the manual and it is definately possible to get units to target enemies they can't see and it "sticks" briefly.