[PvK]

Hmm, the performance issue could be made scalable per game. For example, in Space Empires IV, the unit limits can be specified when the game is set up, so impatient people playing on weak computers can play with a low limit.

As far as that test game goes, I'm the player and I have not seen any problems recruiting new units. Gandalf's chart shows something over 100K units, with about 10K being mine.