I'm starting this thread for mission builders to report any issues or questions.
Most of mine are probably not bugs, but limitations and some should probably be considered wishlist items.
Unchecking the box for Load Mission Arena Settings appears to have no effect. The mission will load the tables it is built with and if no particular tables are selected in the mission build, it appears to load the default.
So far we have only one player built arena on the alpha server. On that terrain, a mission can only be built with the default tables, otherwise the ME will crash during the resource build. I will be able to do further testing once we have more player built terrains.
There seems to be no practical way to delay the launch of a flight. Say, if you want an attack to be across the channel before the defense reacts. I've tried to delay the launch of interceptors by setting a very long mission briefing but when it is very long say 5 minutes, at the end of that briefing the mission will sometimes crash and restart.
You have the option of adding a mission. For example if you wanted to have another attack and defend on a different part of the map. If you do this the game will not recognize a 3rd or 4th mission.
The way to do this is by adding more routes and flights, not missions.
At some point in the future, I would like to launch a mission from a static carrier deck. This could not be done in the last version. Changing the Y axis of the spawn might allow AI to spawn on the deck of a dmcv but a player would fall through and crash. Haven't tried this in this version yet.
All in all the missions work well.