That's nice to read at least one positibe comment on the Roman starting position.
Although I admit that it's a bit ad hoc solution. In the first place, Romans shouldn't get that many regions (relatively to other factions). Their position, as AI faction, soon becomes absolutely hegemonic, which wasn't true, especially after Myriocephalon and, eventually, fall of Constantinople.
We'll change that in 2.4 (though it's been changed a bit in 2.3.2 already, which will be released this week ).