What's wrong with the current system?
What was wrong with the Ferrari to cause Ferrari to come out with the new Ferrari?
What was wrong with the Iphone for Steve Jobs to come out with the new Iphone?
Questions best left for the owners / designers of said products.
Like Steve Jobs said, he didn't believe in customer focus groups, he came up with the vision for what people didn't even know that they were missing. Now they don't want to live without these improvements.
The flight model is awesome, maybe HiTech has some ideas on the table but no one has asked for them or thinks improvements are wanted / needed. New planes are nice, but improvements in flight modelling / atmosphere / physics modelling would also be great.