If you want to replace by pasting, you'd lose the first selection by selecting what you want to have replaced. Which means you'd need different selection modes depending on whether you are selecting the source or the target of the copy/move. Furthermore, mainting the original (source) selection while preparing the insertion point (target) of the copy/move is also fraught with some fragility.
> If you want to replace by pasting, you'd lose the first selection by selecting what you want to have replaced.
Yes, that's the tradeoff; you'd have to delete that separately. This would be quite close the X11 primary selection and middle-click paste. I think that works reasonably well on its own, but trying to provide both models as X11 does is a mess.
