I think Ardyn's already tied heavily to the events of the game as is, so I'm sure indirectly there's going to be more scenes with him, even if it's not an actual focus.
I don't know, I'm still confused by his whole deal and "do you know where I got Izunia from muahaahhaha?". I've watched some fan speculations and I'm sure there's written info in his bios from official sources, but it's poorly displayed and developed in the actual game.
I mean I JUST played from chapter 9 on in the span of the last 3-4 days (with lots of monster hunting and royal arms finding) and I was hoping for something to happen.
Also, the game using chapter load screens to detail important bits of story you won't be seeing or playing is just lazy. I get it because of the history of its production but I expected the good stuff at the end would be spared, justifying the need to cut the middle chunks out.
Edit: sorry. As with my recent comments in the OT, I keep ranting which makes it seem like I was down on the game overall but I really liked the game but obviously not blind to the faults.