It's only come up a couple of times on the Peppermint forum .. but I drew it to the devs attention .. whether they'll act on it is up to them, but at the time the last respin had only just been released.
Creating the isohybrid image takes less than a second .. and so far I've found no downside other than lack of persistence which is not important if it's only going to be used as an installation medium.
It has turned out to be handy for some .. guy here:http://www.peppermintos.net/viewtopic.php?p=31120
who's motherboard won't boot FAT/SYSLINUX, but has no problem with ISO9660/ISOLINUX
But here's my take on offering it a first solution .. dd (cat less so, but even cat in this case) still scares the hell outa me, and there's far too much scope for for destroying the data on other drives .. so I tend to view it as a last resort.
With that in mind, you'll probably understand why I'm in no crazy rush to follow up with the devs .. if it's there I'll no doubt use it, and at some point someones going to screw up their data and blame me