1. Combat
- actually join a faction and stay with them (fed, alliance, etc) wherever you are. Sporting a Fed rank and decide to rock up to a CSG station? hell no, you should be dead before you have a chance to request docking. - Could be interesting though at the same time currently it supports you being able to support multiple factions, be a true mercenary if you will, though maybe those that officially align could get bonus, while the current ability remain?
- be able to join the navy of a faction and actually do proper naval combat missions eg. patrols, escort, attack, etc. Think Tie Fighter or Wing Commander. - Same as above, quite interesting
- larger more thought out battles - I don't know what you mean by this, battles, you mean like support comes in and such
- ability to damage/destroy stations. - This is tricky, would need a way to build stations as well, that the stations should be insanely tough, and take more then just a wing or two to take down without getting plugged out of the sky? since otherwise you'd see griefers destroying stations just to annoy traders and such
2. Trading
- online trading data available everywhere - This one I would say no to, would make trading way way too easy, at least now people need to go find the good price spots and such and communicate and such share with others, trading data being available to everyone (gathering you mean the traderoutes) would give way too big an indicator? and people can already buy trade data from nearby systems?
- ability to set up your own mining station like an FBO - build it then offer jobs to import/export stock so that you have a proper trading system - Asteroid stations are coming eventually, I'm guessing but these would seem to be part of this at the very least.
3. Mining
- better way to collect mining fragments - oh gods yes please, having to hunt down ever spinning little ore is frustrating, sure if you align just right they will line up fairly nicely but still.
- ability to mine planets - eh huh? from a ship? planetary landing and then mining? might be coming?
- ability to set up auto droids to mine for you - quite tricky with the whole automation thing but if they simply were a replacement to mining lasers or 'better' way of mining, then it'd be fine in my opinion since you still need to go there and launch said droids?
- ability to set up small mining colonies on planets - would like to see this when planetary landing comes in, and/or mining stations when asteroid stations comes around?
- mineral scanners (small, large) to scan asteroids - yeah this seems to be missing
4. Missions
- ability to create user generated missions - could you give examples of how this would work? or referring to like traders hiring people to escort them in a mission style?
- more mission types - well we just got quite a few more with wing update so it seems to be something frontier is working on so more are coming?
thats just some of the many things you could do with ED - others have way better suggestions.