Space is not a REAL problem. I've got 6 30X30 cm square of "green gaming table" and a skirmish sized grey table (cover a third of my desert table).
and I will used many different settings but with little part from the previous (on GW rulebook, they gave an example : they used the scenery from left side, put it on right side and then add new scenery on left side, as front moves)
(two sided) Full armored battle is a bit tricky because the opponents never have the same "technology level" or if they have, they'll put some aircraft to have some superiority then anti-aircraft tanks then anti-armor infantry. Neverending spiral.
But yes, need vast plains with hills to have some "Koursk 2010" time.