Is it possible to contact the blender dev team?

Is there a way to contact the blender development team to give them ideas for next releases?

I would give them the idea to change the toon shader shadow. It would work the same as the specularity, with a bar to set the shadow power. The higher the value, blacker the shadow, and as the value would getting lower, the shadow would became weaker, until it becames the color of the material.

And not sure, but a plane with an texture with alpha as background could be reconized by the render. Currently, at least for me, it´s rendering the alpha as white, not as invisible.

For me it has made diference,I needed these functions. I only want a better tool for me and for all.

you might want to have a look at:

God bless you man. I will submit my ideas to them now!