Add more teeth to the clasp
This would allow for a more forgiving installation and less bending of the boom to get the mic tip where you want it.
(I'm pretty against this idea, I think the clasp is mechanically strong and that 90-degree increments remove the need to tweak the mic's placement on the clasp, e.g. with more teeth one may slap the mic on the clasp only to have it up by your nose/eyes when really need it down at your mouth)
Removing a tooth from the clasp is also a decent idea to make the increments 120-degrees rather than 90.
I don't really care about how many teeth the clasp has, but the 90 degree rotation is indeed irritating if using the clasp to fold the mic back when not using it (I guess I could just remove it, but where is the fun in that ;) ). I think 120 degrees is much more natural angle for a headset boom and would allow ModMic to be flush with the headband, when folded back - currently it's impossible. I'm not sure how well a three-tooth clasp would work, though, so maybe increments of 60 degrees would be better (and more forgiving for installation)
Of course, the perfect solution would be to have the clasp for semi-permanent attachment (with a stronger magnet), but for repositioning, let the boom rotate freely using some kind of joint (which could be either between the clasp and headphone cup, or between clasp and mic boom). If the clasp retains the four teeth it already has, and the rotating join is between clasp and headphone, it could even be an in-place upgrade for existing ModMics. I have no idea how sound it would be mechanically, though.
i would have one or two teeth for attachment and then a rotation piece on the clasp that allows for free 360 movement. I have my mic attached to my headphones and don't remove it, I just move it out of the way when I'm not using it. Unfortunately, the current 90 degree increments mean the mic is still slightly in the way or too far back on my head.