Ooh, nice and sleek!

I look forward to pinning opponents up against it.
How is the wall going to handle autons? Currently the autons will follow you, but forget to accommodate for corners and get stuck until you turn around and fly back the way you came (although I'm sure that is getting fixed) but the real problem has always been actually getting them inside the Arena. It has always been tedious to make autons wait, get one to follow me a short distance away from the station, then give the engine a single kick and attempt to aim straight through the door while drifting sideways to properly align the auton. If there is a physical open space the autons would need to be programmed to file through; if teleporting/airlocks, they would need to be transferred through with proper accommodation to make sure that they don't end up right inside the walls. Also, mule autons would have to be handled differently than the rest because I'm fairly certain that most people don't attempt to drag the things into heated combat.
I personally like the airlock system the best, and if it is used I have an idea that I've been messing around with. The airlock would have to be accessed from a dockscreen, so I was thinking it should go something like this from the outside:
(You are docked at the illustrious Rigel Battle Arena...blah,blah,blah...)
-Information[
(You are in the visitor's information center...)
-Arena History
-Advice{What you do, how to win, etc. randomly selected}
-[Back to Main]
-Enter Arena
(As you enter the Arena airlock system, you are stopped by an official who asks what ships you would like to bring with you.)
-Bring all autons and wingmen
-Bring only autons
-Bring only wingmen
-Bring all wingmen and autons except for mules
-Leave all ships in drydock{ships disappear; when you exit, they are respawned with all damage and conditions}
-[Back to Main]
-Undock
The place to dock would have to be an obviously marked portion of the wall which was accessible from both sides but without the possibility of the player's ship targeting the port on the opposite side. However, this would mean that the dockscreen would have to be modified or interchanged with another depending on which side of the wall the player was on. An alternative I also considered was to have two stations, one for the inside and one for the outside. Then the inside one would have the dockscreen below:
(You are docked at the illustrious Rigel Battle Arena...blah,blah,blah...)
-Information
(You are in the gladiator's information center...)
-Arena History
Advice{What you do, how to win, specific combat-related tips, etc. randomly selected}
-[Back to Main]
-See Mr. Katami
([History lecture, combat tips, etc.]{more in-depth and relevant than vague tactics described in info center})
-Ask for more advice/history
-Ask a favor{something like free repairs if he likes you enough or you have high success rate}
-[Back to Main]
-Enter Combat
-[same as before]
-Dock Services
-Refuel
-Repair/Replace Armor
-Repair autons/wingmen{only available if they were brought with you}
-Install/Remove Devices{cheaper to work with weapons/shields, more expensive for anything else}
-[Back to Main]
-Exit Arena{respawn autons/wingmen}
-Undock
Another thing that would need to be handled is civilian traffic. It has only ever happened once, but somehow a civilian ship managed to fly straight through the door and get stuck on the wall inside the arena. It got hit by a stray shot and I got the "Watch your fire!" message. I suspect this would become extremely annoying if the Arena were to spawn the entrance directly aligned between a station and the coreward Stargate (if it were left with a physical break as an entrance/exit).
Behold my avatar, one of the few ships to be drawn out pixel by pixel in the dreaded... Microsoft Paint!
Day 31: "I have successfully completed my time reversal experiment! Muahahaha!!!"
Day 30: "I might have run into a little problem here."