I definitely feel it is time for Lisa to leave. Her solo success proved she is bigger than that now. YG will only hold her back. She should take advantage of her popularity. Internationally the world is her Oyster. As long as YG doesn't make it hard ..
For Jisoo, I feel she could actually stay and do well at YG, specifically as an actress. Acting always seemed to be her passion.
Jennie seems to enjoy the Hollywood life, so it would probably be better for her to leave too.
I actually think Rosé would do very well as a soloist at The Black Label.
Ideally, they could still release music together if they wanted too.