I think “recoil smacks you in the face” is something I’ve suggested in the bad ideas thread before, if I recall.
And…I was pondering whether to give a certain IFV a 20mm autocannon or a 30mm one. If I recall, the vehicle I initially had in mind to base it off of has a 20mm. But then I yet again encountered difficulty finding a good image of the layout for said vehicle, plus realized I kinda wanted the autocannon to rarely spawn at helicopter crash sites, so 30mm became less insane to implement once I yet again wound up using the imitation Merkava design. x.x