It isn't as bad as it could be. They fixed the thing where multi-homeworld Fallen Spire games allowed you to get approximately
[(number of homeworlds)^2]*[(4 Spire Frigates) + (1 Spire Destroyer) + (0.5 Spire Cruiser) + (0.25 Spire Battleship) + (0.125 Spire Dreadnought)]*(number of Spire Shard Reactors)
As many Spire Dreadnoughts as Fighters, anyone?
Granted, to do this you essentially had one shard reactor per three cities (on a 16-homeworld map), but it did give you enormous Spire Fleets.