i'm in your conscience
I didn't like the DPPt in-game trades at all, and I think I've only used one and that was Chatot. It was only because I didn't want to wait 7 badges into the game to have one, cause I thought the design was awesome and I like...needed one badly haha. And I hate that Haunter trade! So mean! It's holding an Everstone. What a slap in the face!
Since the HGSS in-game trades match the GSC trades for the most part, I don't have much to say on that. I think they're useful and I really like the HGSS specific trades they added, like Jasmine's Steelix. Nice touch!