Assassins: Waste of time?

[Patricius]

I find that even just attacking captains can improve the rating of an already useful spy. Even if some lone priest or diplomat has only a slight effect, they are irritating, and clearing them can give the spy the skills to take out Pope or king. Assassinating princesses has a dramatic dread effect, so I sometimes leave them alone. Assassins seem to have improved considerably with 1.2, anyhow. Yet I think there is probably too much of a random factor with a very skilled or unskiilled assassin.