Timers are a bad way to handle nickserv auth because you never really know the correct delay. You're better off writing a script for that and joining when you receive the event; that's much more efficient and responsive.
However, delayed join can be useful for people on large amounts of large channels, as this tends to flood them off. In that case, however, you can always use /timer in an ON CONNECT or perform tab (just not in favorites), so it's not really necessary.
