Hmmm... I like the general ideas, dude... but the problem is that when I, the player, am docked with the support ship, I have a very limited maneuvering ability, or the dock will be broken up. So I'd say that rules out weaponry add-ons for fighters.
For freighters, however (as well as for those poor defenseless cargo depots) armed cargo pods could be interesting.
Bits could be
very annoying. I can see how they'd be like: about one quarter the size of an escape pod, with a rapid-fire turret or two, and a speed of around 60 or so. Launch a swarm of them at a shivan capship, and watch the fireworks begin!

Last thing: that shield generator is an awesome idea! It wouldn't even have to be activated/deactivated by SEXP's as sheilds don't have any collision-checking status. It could basically be a safe haven for fighters or bombers in a battle. They wouldn't even have to dock, as you could make it a fairly large shield mesh, which would block all incoming fire. It would be especially handy to have for those missions where you have to rearm, but if you stop flying evasive, you're dead. Stop inside the shield radius and call in support. I like it

!
------------------
"He who laughs last thinks slowest."
"Just becase you're paranoid doesn't mean they're not out to get you."
"To err is human; to really screw up you need a computer."
Creator of the
Sandvich Bar, the CapShip Turret Upgrade, the Complete FS2 Ship List and the System Backgrounds List (all available from the site)