Mask to control Remesh tool and Simplify brush

Currently Masks don't have any affect on the Simplify brush or Remesh tool. It would be nice if we can mask areas we want to keep details in and remesh everything else. This will be of great use for preparing models for 3D printing

Here's a video of what I'm trying to do, keep the edges sharp while simplifying the non important areas.

Use could be like:

Mask intensity 100% (Black)= no affect from remesh or simplify brush

Mask intensity 50%= 50% affected by the tools

Mask intensity 0%= 100% affected by the tools

Mope this is clear,

cheers