You might have better luck in recruitment. For earth I found the divide was best as the VIPs are always in the room through the tunnel. And always pick them up if you see one on spawn as it will be in the divide. Forgotten shore are also quick as they're up the ramp and in the first room toward skywatch. I avoided picking them up in mothyards as it takes ages to get to the room just before skywatch. Quite a grind now you no longer have to be on patrol to get materials but keep going, you'll get there :) Edit: just checked your grimoire, you don't need my advice ;)