Speaking of the ending, here is my very radical outline for an alternate ending of TROS:
We cut away from Rey and Ben before he dies. Rey joins back up with the Resistance and they celebrate.
Fade to black on Celebration.
Fade in on shot similar to first shot of A New Hope. A Resurgent Star Destroyer flies overhead, followed by dozens of Resistance ships chasing it. At the front is a modified Blockade Runner, in the control room sits Poe Dameron. (Or possibly leading the chase in an X-Wing that Poe sits in with BB-8. If he is in his pilot suit, change the color of his jump suit to blue New Republic colors.)
I feel him being on the bridge of a ship would clearly visualize his transition to hotshot pilot to responsible leader, but he was still flying an X-Wing during the end battle. Anyway, this could be the moment Poe says something inspirational over the comms that could also help emphasize “General Poe”.
[This would require a fan-film scale production, but I think it is rather straightforward idea-wise]
On the outskirts of a rural village, locals gather outside as three First Order troop transports land nearby. The bay door opens, but instead of stormtroopers we see rescued children rush toward their emotional families. After all the children are out, we insert footage of Finn standing behind them (Potentially either Luke or Leia’s lightsaber is attached to his belt if you keep his Force subplot). This would reflect nicely with how we are initially introduced to Finn, and would bring his arc full circle.
Bonus Idea: Have Chewie finally go back home to his family on Kashyyyk. You could just create a modern version of this image, have Chewie step into frame, then cut to a close-up. Chewie deserves more than a goddamn medal at this point!
Finally, we get to Rey. She flies across the dunes of Tattooine and lands outside the abandoned Lars homestead. R2 and 3PO are with her, and still-wiped 3PO says there is something familiar about this place. Rey briefly explores the home, then sits outside and unrolls a cloth full of saber parts. In an insert shot, we see as she uses the Force to construct a new lightsaber. She activates the saber to reveal a yellow blade.
She then senses something ahead of her. The twin suns slowly rise above the horizon, and with them, a silhouette of a figure rising over the hill. It’s Ben Solo. Rey smiles and rises to meet him. The spirits of Luke, Leia and Anakin watch from a distance. Our final shot is of R2, 3PO, and Rey watching the sunrise as Ben slowly approaches.