Idea: "soft-revert" activity without changing point(s) in open buffers

My favorite feature of activities is the ability to `revert` at any time, always there to save you when your activity has "gotten away from you", and you've introduced new or extraneous windows and buffers into the mix, or drifted away. But _usually_ this comes from opening other windows I no longer need, and `revert` is just a quick way to sweep those away and restore my window/buffer setup.

In that case, I'd prefer for the current point in each of the already displayed buffers to be left unchanged — a "soft-revert" if you will. Soft revert is basically just like normal revert, except point is left alone (for already visited buffers, that is). Perhaps a prefix arg to `revert` would be a good interface for `soft-revert`? Or a separate (lesser used) command? Or an option (I would pretty much always prefer for point in opened buffers to remain unchanged)?