Don't worry oh my mighty LORD, you will have a boost of wealth if you are owner of a fief,
but in Strategus...
How many fief are available on the map? Not as much as players, that would be unfair for the others.
Btw, if you are clan leader, you should call your teammate to fight with you, and by your wise tactic and orders, you should win most rounds and then get a x5 and have no problem with upkeep.
Clan are already stronger in cRPG and much stronger in Strategus, that's logical but plz don't do something to nerf lone players, they have no real interest in Strat as it was (i hope crafting, trading and all the cool stuff that chadz is preparing for us will give a reason to play strat for lone players).