i hope they make the skills flow more smoothly together. It feels slow and cumbersome to me, then again I only leveled it to 70 before I came back to it before endwalker, and its changed since Stormblood and I don't much remember it being much fun for me since ARR. The combo system for Dragoon could definitely use some reworking. I feel like it shouldn't need more than 4 buttons to do either of the two combos. The Wheel and Fang thing too needs to be consolidated into a more natural flowing skill order. I kind of hope they start mixing Dragoon with Dragon in that you for whatever reason start to become a combination of Dragon and Dragoon, obtaining a breath weapon cone AOE as part of your AOE rotation, whether you breathe it yourself or emulate it with some kind of lance/ether skill would be cool. Hate to say it but Jumps feel unrewarding. in the traditional sense Jumps rewarded your sacrificing a turn of combat for a turn of invincibility and double or triple damage upon landing. Jumps don't feel like Dragoon's big payoff abilities in 14. Maybe incorporate some of the old delayed invincibility back into the class for really walloping damage upon landing could help make those jumps feel special and rewarding.

So yeah shorten the 2 combos they have to 4 buttons, same starter, then you pick the middle combo you want to use, and based on which middle combo you pick the finisher button changes.
Make Fang and Wheel flow into the above combo better, like make one AOE and one Single Target or something and you gain something when using either of them.
Make Jumps more impactful. I wouldn't mind if you had maybe a 2.5-second delay before you landed in did your damage if it meant when you landed you were invulnerable for the same 2.5 seconds while dealing some ridiculous heavy damage. Maybe jumps have a slightly longer recast time after these changes, I don't know. I feel like using a Jump ability should be like a major event like a samurai whos about to use Midare, or a Monk who's about to unleash a Blitz. In both cases you did several things to build up to this and now the big payoff is a huge DPS spike.
And more Dragon Hybrid abilities. Breath Weapons fit in my opinion given all the other Dragon themed things Dragoon's use.