There were reports a few years back that Fusion was slated for remastering, as there was a thread started by Sony at the Playstation Forums asking people which PS2 titles they would like to see remastered, and Fusion got what seemed enough votes to qualify.

As for the trophy list, since the list will be made up of trophies from all three games, and trophies are decided on a point system to always come to the same amount for a Platinum title, I expect a lot of the old Gold trophies and most of the Silver trophies to have been removed from HD/FURY/2048, and turn it into one of those games with a lot of Bronze trophies spread out over the three titles.