Would be pretty funny if they add these characters that almost no one knows, and say: "These characters fit more in the U3 word"
They added Guerro, dude. That guy isn't really that much of an antagonist the way Jason is. Jason takes the Flynn/Eddy kind of antagonist (friendly under conditions).
I mean they added Guerro ( it would be logical to add Jason and Chase ) and to be honest he ain't much of a character. He is a typical general type while Jason has a character, he is somewhat funny, wiseguy as Drake calls him. I mean it would be awesome to see him in U3.
Same goes for Chase.
But the thing about Guerro is that his sound files were already on disc by the time the game launched and all ND needed to do during postlaunch was to make his skin. To make Dante and Chase, they would have to get their voice actors in the studio to record lines and I'm not sure that ND would be willing to do that.