I think the problem with including Saskia in any major role is that she can be pretty explicitly dead by Geralt's hand.
There's a lot more hope for seeing Iorveth. I think the very worst end he can meet in TW2 is still quite murky. He's being hauled off in a cart if you choose to save Triss in the Scoiatel path, and Geralt can choose whether or not to intervene. If you decide not to help him, his fate is entirely unknown.
There's a lot more hope for seeing Iorveth. I think the very worst end he can meet in TW2 is still quite murky. He's being hauled off in a cart if you choose to save Triss in the Scoiatel path, and Geralt can choose whether or not to intervene. If you decide not to help him, his fate is entirely unknown.