Totally get that - one does not simply just wake up one day and casually write a robust, feature complete geometry kernel by themselves, as alluded to in the above linked thread. It is a massive undertaking that requires a team of very smart people and probably years of work. I do wish there was some consortium pushing for a next-gen replacement of OCC though, I would absolutely donate towards that cause. I can't claim to know whether OCC is salvageable to the point that it is possible for it to become as good as some of the closed source ones, but other, more well versed people in the space seem to indicate that it has some pretty fundamental problems with it that are not easily addressed.