Hey! You Should Implement a Different Hotkey To change the Direction From where u're aiming to, Instead of Aiming and Pressing Shift.
Also, Add Electro Aid Drinks for like 10 Dollars each, So we can Sprint More Often XD
If you ever Played APB[All Points Bulletin, its a game] It has the Hotkey to change Direction, You should Take the Idea from there :3
Peace.