[ShadowFD]

MH in PS2, you can't change the pigs costume (I think, it's a long time ago).

MH2 and MH2 Freedom in PSP, you can

Dunno about MH Dos. I never got a chance to play that.

And they just raise your friendship meter whenever you play with a friend. (kinda useless).

....

Yes. I like playing MH. (Currently trying to finish all quests after beating Acantor.)