If I could have just one feature added to this game it would be the ability to purchase and pilot capital ships. I just love it when I get behind the captain's chair of a super huge ship crammed to the brink with overwhelming firepower. Remember, bigger
is better. I also lke the idea of owning a base. Think, you could have your own base in some system and have other players come and dock. Maybe have your own little economy inside your base, like choosing what commodities, equipment, or ships you can sell at your base for other players to buy. That would bring a totally new way of earning credits to the game and bring in more variety.
Also, new equipment would be nice. I'd like to buy a new engine that could actually increase my ship's normal/cruise speed, or maneuvering thrusters that could help my ship take sharper turns (maybe restrict them to light fighters to give them an advantage over the heavy and very heavy fighters). Custom decals and paint is a nice idea to, I wanna feel unique rather than just another Joe flying an Eagle.
My main thing, as I mentioned earlier, is that capital ships should play a larger role! Maybe not just the player being able to buy and pilot one but also having the computer use them more to. In SP I just loved to make strafing runs against capital ships. It was nice to see how my tiny little fighter beat the total crud out of a huge heavy cruiser. I'd also like to see the factions (in MP) attack the other factions with cap ships. I like to fly between two groups of cap ships right in the center of their fire, dodging it and then returning with my own weapons. The battles would be more action-packed if they had cap ships and not just fighters.
Just to add my little comment to this:
ALso trackball is not good for gaming, its not accurate enough.
I use a trackball and I personaly have found it more accurate than any standard mouse I've ever used. I beat Hovis in the race my first attempt without having any problems moving through the rings.