Basically, I jumped inside the pot for the joke factor, and I did get out to revive people and take pot shots at the enemy. When I was constantly popping in and out I was just screwing with you.

I think it would be absolutely hilarious to watch someone hiding in a barrel get their barrel shattered. I would probably freeze up and be sitting there for a moment.

In other words, sounds good to me. They're still funny, they're still limited cover, but they aren't horribly unbalanced and shamelessly unrealistic.

Curses, foiled again!

I find the concept of roofing quite simple: you're "roofing" when you're using the ridiculous flying abilities of a speederbike to land on an otherwise unaccessible roof inside the CP radius, and capturing the CP from there (with or without the aid of a spawn beacon/ spawning on Squad Leader).

This means capping from the roof of the outpost CP on Bestine, for example, is tolerable because the mapper placed ladders leading to it. Same applies to the Slave Quarters static, as you can access them with a little jumping skills.

For griefing see Wikipedia

I think the pots are quite funny and have never seen players trying to exploit them. Honestly, I fail to understand how they could become a problem.

Making them destructible would be neat, but going over the trouble of creating a "pot" vehicle, removing the static from every map that has them and replacing them with objectspawners for each gamemode is bit excessive for such a small detail, especially as there's many more pressing matters.

Griefing can be summarized as deliberately ruining the fun for people. 

Too true. Gwynzer hopping onto a server for then to just idle? Populating a server. Me getting bored and taking a break out of the way, thus essentially doing the same thing? I get flamed for not playing the mod enough (as if I'm supposed to regularly play the mod every single weekend for years on end to satisfy some sort of attendance requirement by BI).