Arch Tool feature

One feature I would like to be able to do is rotate my Arch in any of the 4 compass directions like the stairs. I mean exactly like the stairs when your first creating them. I just click on N,S,E.W and get perfectly align stairs and can still do adjustments before I hit make. I really like that with the stairs and think the arch tool could use a similiar feature. Thanks for putting that in there. :)