At the minute flying the Xian on servers such as KOTH, WASTELAND and EXILE is impossible. The engine percentage thing was the worst idea I have ever come across it basically disallows you to make a combat landing fast and smooth.
ACTUAL JETS should have this feature by all means its a great feature you don't land and take off again so soon however things like the blackfish and the y-32 Xian just makes me not want to fly anymore.
TWO IDEAS TO RESOLVE MOST PEOPLES PROBLEMS
1 - Make this new flying stuff an option you can choose from include it with advanced flight mode. So people can basically turn it off if they dont like it or turn it on.
2 - Make the JETS with the new fly mode but keep the xian the way it was.
Alot of people i know prefer the option to choose from this new flight mode or revert to old one. PLEASE make an option to do this just like you have with advanced flgiht mode.