Crown isn't the task that I most enjoy, but it isn't all that bad as you make it out to be. Remember, when you are going to cope an inside corner, you need to get a coping line to follow. It's easy if you just turn your crown upside down (the fence is like the wall and the base is the ceiling) on your miter saw table and cut a back 45º angle.
The result where the 45º meets the curves on the face, is a profile of the cope you will cut. You can then use a pencil to mark this line and back-cut it with your coping saw. I've even got to the point where I can cut my length before I cope just by using the tip of the 45º as the measuring point. Works every time.
When cutting the cope, I've used the Collins foot on my jigsaw with some success but I would like to try the new angled jig being sold on Rockler and other web sites.