Not a clue about the borders nor the unit upkeep. Sorry guys
I did found out that the domination victory is very abusable. Started a duel sized pangea map as Greece, king level. Build two hoplites and attacked Rome. Got the city after 2/3 turns with my last hoplite which was hurt to the point of death. Rome still had some healthy unit that he'd called back after my attack, I had just one fresh hoplite coming in.
Now I'm sure I'd have pulled of a less cheesy victory should I have waited for that 3rd hoplite to arrive to the scene before I attacked. But the whole thing shows that especially on these small maps you can rush your opponent with ease. Gonna try this on deity level as well.
