Hi klaudio, well I agree with everything you said, but unfortunately filleting is a particularly difficult area to improve. Right now the plan that I have to improve it involves using a library from another company and they aren't ready yet so it's not likely to happen for v4. If they take too long then I'll have to re-evaluate that plan but right now that seems to be the best way to make major progress for the longer term.

During the v4 beta process I will do a little experimentation to see if I can do a few tune-ups to the existing filleter but it's not too likely to give a really big improvement and it's pretty easy that altering how it works to improve one particular case will have side effects that will make things worse for other cases.

So improving fillets is definitely something that I want to do, but right now I'm waiting on some other people's work.

- Michael