Recently migrated from Android to iOS and soon my only VO compatible device will be an iPad. Though much is the same a few key differences do make play on iOS very difficult. With out plugins or physical keyboard compatability some other arrangements need be available. A few things I feel are badly needed

Non-Accelerometer, on screen button +Rotate control.

Straif Up/Dwn on screen button control.

/TurboSet <value m/s>. It is extra difficult to stack missiles or rockets manually with touch controls.

/RepairShipToggle for auto repair function.

/ReplenishAllToggle for auto reload function.

To the flight view Mission/Nav/Cargo screen Button add Tactical & Toplist.

When in a Turret some screen buttons are not used. Would be extremely helpful if they could change to useful functions.

Stop to Next for changing to the next +number turret available on the ship.

Secondary Trigger (Blue) to Prev. For changing to the previous -number turret on the ship.

Turbo to +Zoom.

I can live without a lot, but some functions are essential for successful game play.

Not sure if you are aware or not, but you can install plugins on iOS, its just not a very reported on feature. You can use a program such as DiskAid to create the plugin folder and install plugins (dont ask where, i really do not know) but they do work.

No jailbreaking required either!