Do you really know that for a fact or do you just assume that? What program with a scribbly interface are you actually using on a regular basis?
> I can also use this interface on a tablet.
You can also use toolshelfs (and many other interface elements) on a tablet.
> Many people are wired differently to your preferences, it's worth trying new approaches to old tools.
This is not a new approach, this is a very old approach that has been summarily rejected as a good way of going about things.