Later on, you get it taken to more extremes with plasma rifles and cannons, although PRs actually deliver damage PLUS heat.
The MG rules are in TacOps, allowing an MG to be set to a much higher ROF at the cost of gobbling ammo like mad and generating heat, but MGs then deal 1d6 damage as well.
Edit: In MWO, you could combine the two and have MGs "spin up" to higher/hotter ROF mode.
Edited by Brain Cancer, 03 November 2017 - 11:59 AM.