I'm sorry, but fun alone doesn't make or break a game. It is what that game actually brings to the table that wasn't present before.
I am not denying that the graphics are good or the gameplay is fun. But it is the small things that make or break a game, and that's been evident throughout PMD's history, as far as I see it.
PMD2 brought a whole lot of new things to the table - guild system, Croagunk Swap Shop and the items revolving around it, a plot that touches hearts, a much bigger item bag (thank goodness), able to recruit peeps even with a full party, and challenging post-game dungeons...but, in the process, it took away the unlimited storage and the Friend Areas. (The storage bit I see as a bit of a mixed blessing, since although the storage isn't unlimited, the bag is bigger - plus it's more of a challenge to decide what to keep.) However, the fact that it took away the Friend Areas is responsible for why I will forever prefer PMD1 over PMD2 (that, and PMD1 has easier level-grinding).
PMD3 Magnagate might have all the new features in the world, but it cut the available Pokemon in the game by 75%, in comparison to the previous title. But in addition, it greatly watered down the difficulty level of the PMD series - I read a quick synopsis of the changes on Bulbapedia, and it seems like Magnagate is an insultingly easy game when compared to most titles.
I'm not trying to take a jab at you. I never do, even though at times I feel that you act like I do. I'm just presenting what I see and expounding upon it. It's for reasons similar to this that I turn away from Pokemon Rumble Blast - I've asked many people for an explanation on why it's a good game and I've never gotten a satisfying answer. (I'd rather not get into why since that's a whole other story.)
I'm probably guilty of fanboying over FE Awakening, and yes, maybe that is clouding my judgment on how good of a game it is. I really wanted Magnagate to be a good game. I did some snooping, looked around, got info on the game...and found out, at the end of the day, it wasn't.
And it hurt. ;_;
I apologize for the large wall of text, but I like to explain myself. I consider you a friend and I believe my friends deserve the whole story - I don't just want to say what I feel, I want to say why I feel it too.