I will kick this off with my greatest want.
I want to be able to wage war on an empire and erase them from eve. I want to be able to blow up their npc stations, I want to jettison the empire leaders into space. I want to doomsday entire planets and eat popcorn while they explode.
I would like Stars to deal heat damage.
Black holes that suck you in and crumple your ship/pod up.
Quasars and magnetars dealing damage etc.
Basically the things you see in WH systems that look cool but are basically just the skybox, instead, I’d like to see those in systems as tangible things that you can die to if you’re not careful, and that you can maybe use as pitfalls against other plalyers, for example if you bait them into scanning you down with combat probes, and they get some fun surprise when they land.
Fit 50000MN on Interceptor without penalties.
I want to be able to have temporally unlimited Abyssal pockets where you could move into. Been wanting this since they were introduced. I think the environments are very beautiful, CCP did a nice job with them. I don’t care about loot or farming them, I just want an option to live in that space.
That would be amazing!
I wonder if CCP would consider a pay per month feature for a person to have their very own pocket of subspace with options to maybe pay for additional features like mining belts or combat sites.
Fun fact, wormholes weren’t meant to be lived in.
Nonsense. If they didn’t want us to live there they wouldn’t have let us anchor POSes and Upwells there.
I want to be able to build farming structures in space. These structures would be huge glass domed structures that would actually have soil to grow all kinds of different resources.
Including my BEAUTIFUL FLOWERS 
It would work similar like PI. You can farm low, mid, or high end resources from these farms. You also can obtain farming equipment to make the process faster. Of course, the skills to do it all.
Use stations like in SC.
I was deeply hurt when CCPs Incarna expansion exploded into so much vaporware. I had such high hopes. So Id want that back in some form or another without melting our computers.
Id also echo @Akkar_Kardashev in their wishes for “terrain” in space. Like the pockets you can navigate through in some of the missions with AOE damage, or just like WH buffs and debuffs in pockets of weird sizes and shapes and combinations, but on a larger scale. Then plinking them down to spawn around FW gates and inside plexs, around stations, citadels or other celestials like belts, and randomly having them spawn, despawn and respawn in various ways to create gridlike “terrain” that can be navigated or used for traps, defences, etc in various new and interesting combinations and ways.
I wish I could nuke triglavians into oblivion.
And also get rid of npc miners, those idiots don’t produce any T2 I could by cheaper, they are just thiefs without a mining permit.
Have our own Captains Quarters in the Station & we could have a lobby where players could talk using their avatars like other MMO’s… oh, wait…
I wish I could go to my nearest space store and bake me a chocolate-streaked Lemmon Meringue pie with Kiwi and strawberry toppings.
Have cluster-wide conventions and conversations on the dangers of bullying NPCs and overheating modules.
That.
Join a pirate faction.
At least this diabetes is a safe one.
I didn’t really ask for “terrain” as such, more, black holes, quasars, magnetars etc. All real space furniture, but in game and not as skybox meat.
Aliens. I ask myself every time I play EVE. where are all the other civilizations? All we have are humans and lesser lifeforms for food. There are the Trigalvians, but more humans with more cybernetics, like the well known Borg. They would rather incinerate you, than assimilate you.
I would want aliens who have weird ships other than our own. NPCs we don’t understand and don’t comprehend. Aliens who attempt to be nice to us but get blown up and other who just want us to die. Tribal primitives found on planets, enslaved by the corporations under the name “unpaid interns”. The factions don’t need to accept it, the corporations seek these unpaid interns to assist them in their educational process.
Having no alien life or civilizations, feels wrong for anything labeled science-fiction.
Mine Safe 
Safe? Mate, this is fruit-based PvE. The only spike here is vitamin C. If anything, CONCORD should be worried about a galaxy-wide shortage of whipped cream.
Yum
No thanks. Aliens suck, it always gets conflated into planet of hats. ”This is the warrior species, this is the diplomat species, this is the trader species, these are the parasitic space wasps”
With humans writers understand that there is nuance to cultures.
Sounds like you watch too much George Lucas and Disney Star Wars. Only in his movies, entire planets had only one eco system as well.
Terry Pratchett did it too.
It’s quite common.