Are you saying the airplane spits out its own THS setting?
It does (sort of). You insert ZFW, ZFCG and Block fuel into the box and it calculates the TOW and T/O CG - you then set the THS accordingly. Heard that some newer Airbii set the THS for takeoff automatically, based on the FMGC calculation.
Another thing is that you get the T/O trim setting on your loadsheet and you could just set it too, straight from the paper. But at least at my outfit, the SOP is to use the value from the FMGS.
Either way, you still need a traditional loadsheet...