Such the reassign feature in forms, we would like to have another feature called reroute or whatever.
the requested feature should works the same as reassign (to a user, or group) but user should be able to edit the form and then reroute.
when assigning to a group. each user of the group should be able to add his comments prior to take the action. once all users of the group take their actions, the workflow continue the next step (Same as this post)