for 1 just remove requirements
for 2 its probs under units- stats- repair time
for 3 just work your way off of the already in place upgrades(this is simple once you understand how it works)
just need the affected unit by upgrade
how much upgrade costs
and the add or set type of the upgrade and what its adding or setting under upgrade effects
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory