Not sure what do you mean by "newer BIOS" allowing that. But in any case it would be nice regardless for those that just want to do it after a few clicks. Afterall there are plenty users who don't like to fiddle around like we do, i was mostly referring to them from the beggining.
Unless MSI completely removed that feature from their newer BIOS-es saying "oh they can just set the CO curve themselves" (which would be pretty anti-consumer), i don't see a reason not to have it on these boards (ofcourse wether this is within the BIOS teams ability to do is another question, if they still have a BIOS team at all).