What are people's strategies for marking 20 enemies in sector 4? I'm not sure if gg's mark for being under 100% health counts towards it. So I can only see revan being viable, but he can only mark so many people in a battle.
Would it be worth it to go in with a team like rey, jkr, thrawn, traya, hermit? Even with a team like that I'm not sure I could turtle long enough to get that many marks in one battle.