The way that Gavinor acted in the last sample chapters has got me thinking about his role in Stormlight 6-10. It seems like a lot of people both here and on Reddit think that he's being set up as Odium's champion—which I find to be a pretty clear red herring, but that's beside the point. Assuming that he survives WaT, I think that Gavinor will become a Radiant, most likely a Dustbringer.
Currently, we only have two named Dustbringer characters, Malata and Ral-na, neither of which seem particularly aligned with Urithiru and the rest of the radiants (admittedly I haven't read Dawnshard yet so I may be wrong about Ral-na). By the time the Dustbringer book rolls around, Gav will be at least 16 and will have had a number of books to develop his character.
We don't know a ton about the order, but they seem to be based around the control and application of great power, and self-mastery. I think this aligns really well with overcoming and controlling great rage/hatred (especially when that hatred stems from the heir to the throne of Alethkar.) The Coppermind states that the order is typically built around tinkerers and strategists, but it also says that the Releasers are the most diverse order, so Gavinor's position as prince/king doesn't feel like too much of a stretch to me.
Of course, I might be completely wrong, I'm just spitballing here.
Thoughts?