In my view HOI3 has a really great potential and is getting better from the big failure it was at release. HOI3 is still unplayable to me (too slow on a high end computer) but FI Semper is better and the game can be played at least until late 1946.
I think that performance wise things will improve a lot if the new code will support multicore pc. Said that I have still two issues in my mind:
1) Any plan to split manpower from weapons? For example I cannot see the chance for Ethiopia or Congo for building a gun even with the licensing
2) Any chance to extend the HQ system to air and naval units?