I'd vote for this one!! As it is now, Notify Window is barely useful. Furthermore, the max number of entries could be expanded because you could easily have 120 (or whatever it is) on one network that you're WATCHing and none of them apply to any other network (opers do this regularly for troublesome nicks), and that makes the Notify Window exceedingly long if those nicks are also on the other 2 or 3 networks you happen to be connected to. With a 120-nick limit, you might not even be able to specify nicks on other networks at all because you've got them used up just on one network!!!
So, I say, "Yes, please!"