Turt, I have spent many a time in the offline choice with any map I have downloaded in the game. You can play with the arena settings and object hardness, regeneration times and even destroy specific objects anywhere on the map with a click on the mouse. I'm sure FLS would be happy to help you. You can fiddle around in the arena settings and change ownership of bases, etc.. You just need to explore a bit offline in the arena settings and become a little familiar with what things do. Again, FLS could be of help or I can help you explore a little if you see me around. FLS will have a better grasp of settings though.
As far as bombing in the TA, I think if they could adjust the settings for regenerating objects would be helpful. Allow someone to bomb an object with a hardness of the MA settings, but regenerate in 60 seconds as TC suggested would be great.
Also, there is a terrain that Bustr made for tanking, bombing, etc. that you can download and use offline for practice. I have it, but don't know where I downloaded it from.
Cheers, One-eye