If we look at containment patrol mode, then we can say that harder patrol modes are fun too
I really love that Bungie did try out a 10 level difference in this patrol mode to keep it more harder than, for example, Cosmodrome Patrol difficulty.
Others and I wished for a long time to get a "hardcore" mode for patrol and I personally think this approach is a good step into the right direction.
Now I only wish I could use some sort of auto scaling to play some patrols on Cosmodrome/EDZ on a harder difficulty, so that enemies at least give some resistance instead of being braindead free kills all the time.
Keep going, Bungie! :)
Edit: I love Bungie.net for messing up and losing half the title of posts... Should be fixed now.