Yeah it can be, I'd prefer a GM mode though honestly. Basically you put your team together and let it play out on the field. I haven't done it much this year but I spent a lot of time last year doing MOM only. You can get more realistic stats because the human element is taken out of play. You have to play matchups and know when to ride hot streaks, you almost root for injuries just to see how you can make adjustments to your roster.
I think playing vs the CPU is more rewarding but MOM is fun too. This year though it just seems the mode is broken so that's why I'm not doing it. The CPU takes over too much so you might as well just watch the CPU vs CPU.