A marque is too difficult and extremely slow when we should be able to paint select vertex areas to easily transfer weights to other bones.

I really wish you also had the option to transfer copy or project skin weights from one model so we can switch to another and paste, transfer or project. Also an eye dropper so we can quickly select the color to paint rather than having to switch to select, select an area to see the value then switch back, add the weight value to paint etc.

I think you'd probably want this too, hopefully an upgrade/update is coming soon.