We need to discuss ballparks.
This is my proposal:
Each team gets a 30,000 seat stadium to start. If they want to add more seats, the owner must pay for them out of his own pocket by season's end. Each 1,000 seats will cost $500,000, so you'd need $5M for a 40,000-seat stadium.
You can set park factors however you'd like. But regardless of how we manage capacities, we're going to need each team to decide on their factors before we start the draft, so that teams aren't basing their factors on their roster.