@ Omnipus - thanks for sharing
I think I just like the idea of MGs getting some benefit (other than larger ammo) for the penalty to hit un-deployed and the extra weight.
I'm really trying to not house rule the world out of things here - just beause I can, doesn't mean I should ....
For this
For MGs what I've been doing is this: a 5+ on ammo dice triggers suppression if firing at half or more of the weapon's ROF. It hasn't come up a whole ton, though, so I can't say I've tested it extensively. From the handful of times it did, it feels pretty ok, not game-breaking.
What I'm trying is that 2 5's count as a suppression (or an additional hit - I haven't decided that yet, but I'm thinking or an additional hit). @ Omnipus I think mechanically it ends up being very similar to what you are doing anyway because the chance of getting multiple 5s really only becomes significant after ROF4 anyway (because it's impossible on 1 dice, 1/36 on 2 dice, etc,) - so I'm just trying that. Like I said, I suspect it gives almost the same odds as your approach
I also toyed with the idea of allowing "machine gunner" speciality to re-roll ammo dice on a roll (not the normal test dice) rather than get the +1 bonus. I'm on the fence about this because it'll be an additional re-roll over and above pushing etc - I'm not sure
//
it's also interesting to hear about the various "GM assistance stuff" - how are you using clocks (I assume PbtA clocks).