Triangulate non-planar quads

I am hoping it is possible to request a new triangulate tool that only triangulates quads that are concave or convex over a certain user selected angle. For example, if you input 170 then all the non-planar quads between 170 and 180 degrees will not be triangulated but all quads below 170 will be.

Rhino has this feature and is called "Triangulate Non Planar Quads" It also shows in real time the quads that are going to be triangulated with a highlighted outline before you click OK to implement. A very handy feature if you need to triangulate seriously twisted quads but leave the others still as quads.

Thanks 

Done.

Fantastic !

Thanks IStonia