While i admire your efforts in this Treewyrm, i have no understanding of it and don’t wish to, I’m with Schmackbolzen on this regarding the question why?
There are plenty of us, me included who do not have MAX, and have no intention of getting it. The advantage at the moment with those of us who mess with sur files is that the sur tool that Schmackbolzen wrote works for a large percentage of models, both static and those with parts. While I agree a MAX plugin and exporter will be nice for those that have it, plenty of us don’t.
If any upgrades need doing, the two of you should discuss what needs fixing (if anything) and update accordingly, so everyone can use the sur utility, instead of limiting any major upgrades to MAX users only.