I don't really know how to explain this so I'll post some pictures instead.

Can we have this block without this part of it? This block would be really useful for a diagonal slope design.

It would be an unusual shape if I am visualizing it correctly. I haven't made a new slope shape in a while, but if I spent time on it I would probably tackle some other shapes first.

I suggested it because I am trying to make a shape like this.

I guess you can see the problem :)