Hi, I am not sure but i believe it was possible to config "use doubleclick as rightclick" in MP Configuration in the past.
If yes, why isn't available now. I miss it as touchscreen user.
I use a touch screen too.
I have seen this option before, but I don't use anymore.
I replaced it by "SoftRightClick" ( Jerry Kindall: SoftRightClick )
I makes long click to become right click. Very useful!
Of course, you need your touch screen to understand long click. It is often an option in the touch screen controller's settings.