All is well until you reach Level 24 which is to complete the Epic project. Epic project is ridiculous. Spending a lot of time creating things just for 1 epic point which to complete 40 epic points just for the lowest speed-up token. And if you failed in 24h, you have to start all over again. Too much to handle at the same time, cargo, airport etc. Giving players simoleons everytime we up for a new level is my recommendation.