I realize that, but it still feels like it would have been much more useful before finishing the mission, thus it seems frustrating. Giving the mission a land maintenance bonus instead would make it feel better to me, even if it were the same magnitude and thus usually worse. By the way, many players are potentially not aware that this connection exists (those that don't read the forums or the wiki).
There are even more egregious examples (always in my opinion, of course), like converting a province providing a missionary power bonus. Sure, you can often convert more provinces after that, but there are also cases where you get the mission when you can't convert the province in the first place due to low missionary power.
I guess I like the way the conquest missions work, so would like more missions that work this way: they give you something immediately that helps you achieving the mission, then give you another bonus when finishing. Oh, and while I'm thinking of conquest missions and perhaps have your attention, would it be possible for them to provide claims for more than 15 years? Playing Ottos, it's pretty much impossible to conquer the Levant or Egypt in 15 years, so you need to cancel and restart the mission at least once.
