My feelings are
1) On sites that do this, there are generally a large number of games constantly running. So the flaw of 2) is deminished.
2) When the seer binks, the game may be over for one player before they even got a chance to play. Thats only if the seer outs, but still.
Im kinda meh on it, because optimal wolf strategy at that point is to play from day1 assuming one of them is caught.