If you're looking for some cheap bruisers to reliably push the front lines from range or torch enemies with their twin flamethrowers, these are definitely the troops for you. They also pack some heavier weapons that are unavailable to the rest of your troops, making them incredible nice for packing even more heat into your lists.
Something else to note is that you can form a core fireteam of Minutemen to really cause your opponents a whole lot of grief. A Minutemen core fireteam can pack a punch equivalent to a fireteam in a much higher point bracket. I'd suggest taking 2x FOs, 1x Marksmanship, 1x AP HMG, 1x Shotgunner or Missile launcher, depending on what range bands you're hoping to engage. Along with any range capabilities that fireteam would have, it also has a literal torrent of flame coming out it in ARO (8/6 if you take a ML or shotgunner), talk about a BBQ!