As requested, the next version will have a TLI and a more robust target locking system.
Here's a screenshot of both:
The locking system can be toggled with a keypress and it locks onto the target you are looking at in the moment you toggle it.
The TLI works in both freelock and fixedlock targetting modes and can really do the difference if you are a machinegun lover.
Comment here or in the forums if you have further ideas on this or you wish to be able to toggle/untoggle the TLI too.
Special thanks goes to Ottomic for the constant feedback, ideas and help!