Is this a possibility?

I was thinking about how theyd handle weapons throughout the beta and remembered that durring the time leading up to H4’s weapon update 343 revieled that they could alter the weapon balance on the fly from their end and not require us recieving an update.

Is it possible then if we tell them about 1(or more) weapon(s) that needs changing they could do so within the beta?
For example: We tell 343 long enough to change the rate of fire on the smg this first week would/should we expect it to behave diffrently the next?