I'm just starting to get into FoW, and am going British 6th Airborne Airlanding. Starting small, building a couple platoons of infantry to start with. I have a few questions, having never actually played a game:
1) What unit upgrades tend to be useful? I don't want to go totally overboard on PIATs, Engineers, or whatnot.
Maximize your PIATs. At 20 points a pop, they're a bargain, and based on the mission they give you a lot of flexibility. If you have a lot of reserves coming in, you can concentrate your PIATs within the platoons on the board, which does the following: higher break point for the platoon, more AT capability, more assault capability. A rifle/mg stand is ~30 points. A 20 points PIAT team assaults infantry just as well. Like I said, always take them
2) I love the idea of glider-borne light tanks. Are the Tetrarchs actually any good at all, or just a novelty item?
I personally love them. They mitigate the number 1 weakness of this list. Mobility is extremely low, and you're never more vulnerable than when you have to dash across the open to protect an objective and get machine gunned to death by tanks. With a 16 inch move, and the ability to assault infantry as well as any panther or sherman, they're a bargain for 170 points. I take 4, and my opponents find them very, very annoying. If there's a lot of cover and you feel like pulling off some shenanigans, you can always have a platoon of paras hitch a ride on the back of the tanks, just make sure they can't possibly be seen....
3) Does massed infantry work, at all? I am a big fan of the PBI over armored vehicles, in most cases.
That's how I play. This lists bread and butter is your basic para. Get as many of those guys in the list as possible.
4) How important is artillery support? I'm guessing I'll need a few 17 pdrs at least, but can I lean on the PIATs and Gammon Bombs to do some of the anti-tank heavy lifting?
PIATs and Gammon bombs are all you need in assault, but you will need some items that can reach out and touch the enemy and get him to assault rather than just keep pounding your boys from range. Many things can accomplish this. I'm a huge fan of 6 pdrs for their versatility, but they struggle against heavy tanks. 17s are good, but you only get two of them, and they're pricey. Typhoons will keep your opponent honest, he won't be able to go hub to hub, and it will encourage him to close in with you. When the enemy does assault, with extra piats from the hq, and British Bulldog, you'll be able to put the hurt on their tanks. You'll lose a lot of the platoon, but hey, that's what they're there for.
I'm planning a Pegasus Bridge glider force as my initial army, and seeing where I go from there.