I think Flus would rather have the 3T, but he also has been quite vocal that the biggest jump you see a rookie make is in year 2.
Gervon Dexter, to me, showed progression from week 1 to week 17. I would have to think you give him every single rep at 3T he can handle and if he doesn't show you enough after the 2024 season, then you think about bringing in competition or drafting another player high.
The impact Montez Sweat made should not be discounted, I think Jared Verse could be a damned good DE in this system for the next 5+ years (God-willing he stays healthy, of course).
Verse/Billings/Dexter/Sweat is pretty damned nasty if Dexter plays 25% better than last season. Swap out Billings with Pickens or Walker in passing downs.