Pip's ult can turn anyone into chickens. Even if Nando will not Die, Ash wants to fight, Spring has come for grover or you are daring to challenge Makoa. So save your ult if you notice these characters in the enemy team
General heal Pip tip: When using cimbat medic, use cards which make your explosive flask have a lower cooldown and generare ammo so you don't have to reload to heal. If you are not sure, buy deft hands as well (Personally i like cautertise on Pip).
Pip requires investment. Jack of all trades, master of none. Mega Potion Pip? Put every card you can into Healing Potion. Catalyst Pip? Go for the Weapon or Explosive Flask cards. This will help make Pip's objective clearer to him and his team.