Ok, here are my comments :

One faction only restriction : This becomes very much an issue if you try to arrange specifically designed battles, like historical re-enactments or if you want 3 players playing as a single army, one commanding e.g. the cavalery the other the infantery and the third the skirmishers. The limitation will also make games in the style of Battle Isles or Bandits and Mercenaries nearly impossible.

Log files : maybe not a big deal for the occasional game, but priceless for judgeing tournament outcomes and the like. This is definitely worth having.