Roman FM's without command

[Apázlinemjó]

Don't worry to much about the command stars, the important things are your traits where the real command factors are.
In my opinion morale being the most important as this affects a whole army.
The command stars are there for the AI to auto-calc battles in EB. Also you will usually start to get lots more stars as your FM's fight battles, in fact the only time stars really count is the two a Marian reform character needs.
Be careful about using auto-calc in a battle against an opponent with a lot of command stars!

Those can be tricky, crushing defeats from inferior armies.

Anyway, yeah, don't worry about them, the traits are the most important.