Remesh without joining mesh islands

One crucial feature is missing from Blender's remesh feature in Sculpt mode. Currently it always joins islands when remeshing, basically treating whole object as one volume.

In so many cases it would be better if there was option in Remesh panel to remesh islands without joining them, meaning treat each island as separate volume and remesh one-by-one.

For example, this would be useful when you want to remesh to increase the resolution, but not join the fingers and hand to avoid it filling holes.