The only boss I thought was cheap in MP2 was the Boost Guardian, who was just ridiculous. All the other bosses were very, very well designed, and I found I didn't really have much of a problem beating any of them. I mean, it was challenging and fun, but far from what I consider really difficult.
It's good to hear the enemies will be more of a challenge. I loved combat in Wind Waker, it was just plain fun, but it'll be nice to get something a bit more gritty and challenging, too.
As for the news on Ganon, I'm not sure what to think. I didn't really want him in the game, I wanted to see a new adversary (like Majora's Mask), but the guy's quote is very vague. Ganon could still be involved in an indirect way, possibly influencing someone else? It's hard to say. However, I'm sure whatever they do will be very interesting (sounds like it, anyway), so I look forward to it. Let it be said, however, that I hope a new big villain shows up in some way, be it the final boss or some pre-final boss.