Expert Missions Revamp and Fixes

[ZzBombardierzZ]

• [x] Change player detection on crate to not have an infinite Z height by switching away from setTriggerArea
  • [x] Test if this is better when a crate is on a second floor.
• [ ] Better loot
• [ ] Increase AI difficulty (count, turrets, etc)
• [ ] Considering having AI start with the Expert Mission - player would clear AI before starting the Expert Mission, with reinforcements midway. It has often been a request to make the Expert Mission more of an AI fortress in this way. If you're reading this, please feel free to comment your thoughts.
• [x] A notification on the expert missions when it spawns to say '10 players on, loot has gone up a tier. 15 players on loot is up 2 tiers' etc? To encourage combat and expert missions to be completed when there are more on. - Karrosh
• ...more ideas to come

[karrosher]

• Better loot
• Increase AI difficulty (count, turrets, etc)
• Considering having AI start with the Expert Mission - player would clear AI before starting the Expert Mission, with reinforcements midway. It has often been a request to make the Expert Mission more of an AI fortress in this way. If you're reading this, please feel free to comment your thoughts.

Would be very happy for this mission to be made alot harder with ais spawning at each stage and the plot to be upped to match :) I think as it's the 'expert' mission it should be one of the hardest things to do and have loot to match.

Would appreciate having a much harder mission than the black missions as well for extra challenge