That was said once, but looks like it isn't any more...although it still seems a two-seat JF-17 is in the pipeline. Is its role restricted to just LIFT and strike? What about roles as OCU and special-missions such as EW? There are still a number of integral roles for a twin-seat JF-17 to perform besides training, hence scope and production potential is still there.
That is possible, but we can speculate both ways unless there was concrete evidence to back our claims. As far as I know, Pakistani officials said that they opted away from industrial cooperation on the FC-20, and that is it...as for why, we can only speculate.
Hondgu did offer PAF a chance to participate in the L-15 program during its early developmental stages, but PAF opted no. As for a LIFT aircraft now, then the L-15 would still be an ideal candidate.