Try to avoid direct confrontation with Lian. She has a lot of burst damage, two abilities with auto-aim, and her ultimate is essentially an automatic win button for her. Engage with your teammates.
When Inara is using the Treacherous Ground talent, keep your distance from her. If you get caught in her Warder's Field then you'll have no good way to get out.
Do not activate the ultimate when Fernando shields up, he will not even get "tickled" when you do so. Try to ultimate him when he just puts down his shield and has under 60% of health.
Willo is heavily countered by mid-long range fast projectile and hitscan champions. As Willo in this situation, play carefully by denying line-of-sight of those champions and if you want to trade dmg with them peekshot from cover.