You sure you're not stalking me, Mr. Gideon? You've always got really quick, albeit helpful, replies to my posts.
In any case, it sounds like I need to brush up on my SR5 rules.
In that case, though, what about adding the ability to fire a 10 round burst as a simple action to a couple select weapons?
Nope, I just happen to wander the forums a lot. =)
10 round burst imposes a -9 penalty on the target. That's pretty much going to eat up all the defense for most baddies. Which means they're almost guaranteed to die. If you can do that regularly, the GM is going to be hard pressed to make challenging encounters. They have to make baddies tough enough to survive being riddled with 10 bullets at a time, but not so tough that they completely walk over the Mage, Face, and Decker trying to get to the bullet flinging Sam. Remember, you may be an armored killing machine, but the rest of your team is pretty squishy. And what you consider a fun challenge, is going to kill them deader than a door nail.
Also... All these various Burst methods do still include Recoil penalties, which I suspect may be part of why you want to turn the 10 round into a Simple action. This round, you're imposing a -9 penalty on the enemy, but a -10 on yourself. If you don't take a Simple action to calm down and collect yourself, the next 10 round burst will be another -9 to the enemy, but a -20 to yourself. If you were allowed to call it a Simple action, you could hesitate in-between long enough to Take Aim or something, and then keep right on spraying. Which will very quickly mow down the opposition, with little loss on your side.
So yeah... I do think it would be overpowered to allow for Simple death wands. =)