most of your points can be easily done shida and I agree the onevsone map with the airspawns or the bowl was perfect for FFA (Free for All) and the dueling lanes for 1vs1.
God mode should be automatically mapped to control mode 4 or 5. The amount of times I've had to help people in KOTH set it up
but once they have it they are like wow this is awesome. The DA has it enabled it just needs to be more user friendly for the hard of IQ.
to change a map requires a restart of the arena so that is trickier.
The AI is awesome at fighting and they illegally turn on a dime so I would rate them as better than 90% of the community. Especially with their aimbots.