That would be a whole different weapon. And mind you, i would like to have the weapon you have in the game. But i would not like to loose the shock cannon in favor of that weapon.
I mean, i use the shock cannon with my HOTAS profiler as described above. I hold the button, the cannon fires at maximum speed till i release the button, ammo runs out or the capacitor is drained. But it also quickly adds up spread and creates heat. So to be effective, i have to have fire discipline. Hold fire till I am sure to be to be on target. Check heat before firing, to make sure not to boil myself. It's a skillcheck. It's quite different to Multi-Cannons, where i don't mind to hold the trigger a second early. Even if i miss some shots, the weapon just keeps firing. It doesn't overheat me or drain my capacitor and has enough ammo in the weapon so missing a few shots doesn't matter. That's easy mode, it is highly effective while requiring less control and thus less skill than the Shock Cannon.
So as long as i use Shock Cannons properly, understand the distance to the target, know how much i can allow the spread to ramp up and apply trigger discipline, it's a good weapon. (Although it actually is not better than MCs for me, due to MCs also delivering good damage while being so much more forgiving. And then the MC has plenty of ammo while the SC will run out after a few kills. )
Thus i think that the weapon should not be turned into something completely different. It should get the "fires at full speed when holding the button" built into it, to make it useful for everybody, without giving those with trigger scripts an advantage. It could be reasonable to give it a little more punch, to provide an incentive to use and learn how to use it. The low ammo pool will still limit it strictly, but being a more potent burst weapon would make it attractive for some setups and fighting styles. That all being said, it should not be converted into the weapon described above. That weapon should rather be implemented seperately, so we'd have both options available.