[syockit]

Yeah, definitely this. We think that the specs are pretty much baked after a year or two of shipping, so the focus is now on making things faster, which requires very complex algorithms, but don't worry, once we get it done, it won't have to change anymore! Right? ... then new use cases come in. New feature requests come in. We want to adapt the current code to the new cases while still covering the existing ones and also maintaining all the performance boost we gained along the way. But the code is such a mess that it is just not feasible to do so without starting from scratch.