If we limits the linking to things that are both on the same body-part, and slave firing rate to the slowest weapon(with maybe higher rated, more expensive links letting you fire the faster weapons even while you wait on the slower recharge...) then it'd probably be ok. One could conceivably link numerous smaller weapons on an arm together, so you get a massive barrage of smaller fire, good against small-fry. Or you might link the missile launchers installed in your torso together, for a *Chest opens, death ensues* sort of thing, as I seem to recall seeing so often.