About the Stryker MGS... I noticed something... it has a 3 man crew right? Commander, Driver, Gunner.
As soon as you order area fire the gunner trains the turret on the target, hits it with a 105mm round and then starts using the machine-gun. If you don't cancel the target order he just keeps hitting it with the machine-gun and you'll realise that the 105mm main gun never reloads.
Now, if you cancel the order, just a few seconds later the 105mm gets reloaded and if you target again, he fires another main gun round. I came to the following conclusion? I don't know whether it's a but or meant to be this way (I know nothing about the Stryker and its variants other than the little I learnt playing CM:SF), but it seems to me that the Gunner in the MGS is in charge of reloading the main-gun, and firing the machine-gun... so when busy at one thing, he can't do the other.
Uh, I guess that's what I have to report.