Thank you for the hints. Also I'm very courios for the "Chord height" tolerance value.

I play with the options "devide larger .." and run in an other issue. I enabled "curved", but the upper surface is devide in the direction without curvation too. My wish here is a fourth option (planes, curves, all) like "curved UV", so that the upper surface wouldn't devided in the not curved direction of the red arrow. Maybe a fourth option isn't needed and this feature could be implemented for the exist "curved" option.

General I miss quads at the upper surface like the object without fillets show it. I marked two critical areas. So, it's not only a question for the polycount, also for the look.



Also nice would be, if the polygon edges of the polygons could go straigt upward. But maybe that could be done by a inteligent mesher with a sense for beauteousness only. ;)
I know, you like a simple interface, but I could imagine, that it could useful to set independent parameters for "divide larger than .." of curved and plane surfaces.