While I do know that some of them will be the usual "can't say much too early, work in progress", still I have some hopes for throwing us some bare bones

1) Will X4 include proper carriers (or even Carrier scripts and GUI) to ferry fighters around?
2) Will drone ship logic be reballanced/tweaked? Currently drone ship launch small wave of drones, wait when they are destroyed and then launch another. I know this was probably limited to avoid performance issues, but still the end result had bad after taste.
3) Will station destruction logic be adapted - in XR you couldn't completely destroy station and in OOS they were repaired right away. That made station destruction not worth the effort.
4) Will you equalize the repair times between IS and OOS - I mean what is the point of bothering with engineer skills or shipyards if you just go OOS and wait minute or two for the repairs.
5) You ocasionally mentioned that you plan to adjust the universe and universe travel (something with highways tweaks I presume) - can you share some details?
6) Will we finally be able to buy, build and operate Shipyard? Not the PHQ, but the shipyards like NPC shipyards.
7) Will X4 continue story/region of X-Rebirth? I mean every single chapter of XR campaign is ending with cliffhanger - Albion still under PMC control, DeVries still one big junkyard, Xenons in Maelstorm still threat to OL. Story wise this is most frustrating cliffhanger combo in my gaming memory.
8 ) Will any missing race from X3 return (I don't ask which one, simply yes or no)?
9) Are there any plans to replace "spawn out of thin air" system for NPC and hostiles (like pirate/Xenons) with something more physical that player can impact?
(e.g. Xenons mine minerals to build ship for their patrols and invasions - if player hunt down't miners Xenon will stop building ship or build only small bunch that could recover then when player will be busy somewhere else).
10) Will you improve generic mission variety and review their logic?
By variety I don't mean the number or types of the mission, but more of existing mission variants.
For example station attack mission:
- (bad logic) mission spawn buch of fighters attacking station, but these fighters have absolutely no chance to even scratch the paint on the station.
- (good logic) fighters target something small like storage module or turret, something that this small bunch has chance to destroy and player has to actually protect that. Alternatively for higher dfficulties spawn bunch of bombers or even capship that do have chance to destroy or badly dammage the entire station.
- (bad variety) same bunch on fighters spawned every mission
- (good variety) variety and combination of enemies, fighter-bomber mix where bombers attack the station and fighters escort them against your attacks, frigates, destroyer or even fully loaded carriers with escorts making attack on station.
I can probably make 50 more questions, but I think these 10 are my personal top list that I'd love to see some answers.