Personally want to steer away from the traditional Cyclops + Jean Grey romance as it's been done enough times in cartoons and the original movies. I agree with you about a Cyclops + Jean Grey + Wolverine love triangle was wasted screen/comic time...and never made sense. How could anyone, especially someone with the personality of Cyclops, stand to have someone on his team constantly trying to steal his wife away from him? At least in Astonishing X-Men Josh Whedon attempted to address this.
I personally think Jean Grey is too powerful to be in the X-Men universe (she is literally omnipotent). Like, in X-Men : Apocalypse, I felt that Apocalypse was portrayed to be very pathetic, and Jean Grey literally walked all over him. Apocalypse was supposed to be the almighty boss villain of the X-Men universe so with him gone, I don't see a need for Jean Grey anymore.
I personally don't. I prefer if Jean Grey is going to be around, she should be the leader. She can telepathically organize and lead the team from great distances, so is better than a radio, and is more powerful than Apocalypse.
Nothing makes sense in the movies.
They could always have a younger descendant of First Class Frost also named Emma Frost come back. Hopefully as Cyclops' wife. I prefer Cyclops + Emma Frost over Cyclops + Jean Grey. After all, Cyclops is already a decently overpowered super hero so having him paired with Jean Grey, who is literally omnipotent, just makes all villains look pathetic.
I hope they do the Dark Phoenix movie more focused on Jean Grey than in the original movie attempt (ie X3: Last Stand). If you remember that one, it was pretty bad.
Maybe bring in a young Emma Frost (descended from First Class Frost) to hit on Cyclops and get Jean Grey jealous, triggering an uncontrollable Phoenix reaction. LOL