first ae is a great game.
i agree entirely that beyond branding aspects & seat configs, nothing truly RANDOM...with the exception of a needed aircraft suddenly appearing in the used aircraft market happens. so the 2 drawbacks are unrealistic fleet size & unrealistic profits. if ae can support sending an admin email warning for missing a lease payment or bond payment, i would suggest the following RANDOM-pull event that could impact an airline @ anytime & the user would be notified by the admin email...
1) a random email alert that aircraft #123 is no longer in your fleet or operating due to an "incident". (making it more complex, which is not what we would want to do because of time constraints on yuxi, an insurance premium that was very costly every month could be paid & make an airline immune from RANDOMLY losing aircraft & not getting any compensation back)
2) a random government inspection & a fine for like $10-$50mil.
3) a random grounding of a specific type of airplane. yes this would impact all airlines, but if 1 airline has 100 A320's & another has 10...obviously the larger one would be impacted more greatly. also, if the airline with 100 A320's were in the top 10 & competing against an airline with 100 737's that would be a big time random grounding event that could significantly impact that airline.
4) a random strike based off of what your paying employees----so, you go off-line for 10 hours & expect $20 mil in profit to be available & instead you have $0 & need to increase the salaries to all employees.
5) to simplify it has to be big time incidents like planes that are "gone" or groundings or faa fines. weather delays at a specific airport are too small & would only have a slight impact & be a waste of programming time to randomly generate.
i could go-on, but i think you gotta start by thinking small & focusing upon the 2 largest unrealistic realities of ae----an airline with 15 hubs & 3,000 planes & an airline making $20 mil profit in a day. the only way to impact those 2 things is have airlines randomly lose airplanes & randomly get hit with fines/strikes/etc that impact the amount of $$$ they have on hand. just some thoughts!