Monte cassino or, some of the other defensive battles the germans did in italy would be a great area to address. Many anti tank guns and things like nebelwerfers were used heavily in Italy so, there could be some very interesting combo's of sets released for this area. A series similar to K&C's FOB or FL's Stalingrad focusing on one battle would be a great idea. Not much more iconic or pivotal battle in italy than monte cassino. It also allows lots of ideas for allied troops from canadians poles indians etc for allied opponents
Mitch