They give us each operation so it kind of adds up. Still not sure it is a fair trade off for the amount of time it requires. But I still enjoy playing most of the time so it's okay I guess.
@customlol7890 I think all the missions should be doable with a reasonable amount of serious grinding. I don't think you should ever HAVE to open up your wallet. If you want to take a short cut by spending, go for it. But I don't think it should be basically the only way.