Don’t count on the Deep Space Nine star angling for a Star Trek: O’Brien any time soon.
If anyone earned their retirement, it’s Miles O’Brien. Maybe he could show up for one scene, where he lets the rest of the team know that, just like Wolverine did in First Class.
Lol, I’d accept that. Maybe he’s the template for future engineering holograms.
Computer, activate the Emergency Engineering Hologram.
Holo’brien: Jaysus! Your warp core’s knackered. Nothing I can do. Deactivate emergency engineering hologram.
(I don’t think any incarnation of O’Brien would give up so easily; just playing off of your Wolverine clip lol)
I like to think that, whatever it is that earns O’Brien that distinction, it had already happened by the end of DS9. Probably some technical wizardry he came up with while hacking together Cardassian and Federation technology. Just something he did to get the job done, but that would be fully appreciated as a genius piece of work with huge applicability sometime well after his death.