Select & mask - Add more settings (for the Brush tool)

My suggestions for the Select & mask Brush tool

1. Add the Opacity slider.

We can just choose the Hardness, but the Opacity is always 100%.

Not good for precise work as some areas may need a bit of transparency.

2. Add the Blend modes.

Pro editors often use the Soft light & Overlay modes for mask adjustments.

It preserves the darkest/lightest pixels and helps to clean up the mask easier & faster.

P.S. Yep, those manual adjustments can be done outside the Select & mask window, but since there's a Brush tool, why not to have its full functionality?