I was quite lucky with my first few incarnates, someone was running iTrials almost constantly every night and it was quite possible to jump from one to another without a break. I have no idea which ones, but some of them seem to have a much higher chance of a rare or very rare drop than normal. Unfortunately, as is normal, the novelty wore off and the superbly run iTrials have tailed off and it's very hard to find one being run. On Reunion Peak ran a wide variety of different trials and TF's, with a smattering of MSR and Hami for good measure. His leagues were always run like a military operation and very well blocked out before we started. There was never a chance of not getting whatever result or badge needed unless someone failed to pay attention and listen to extremely clear instructions. I assume the holidays have got in the way and normal service will be resumed soon, but it's just a shame there are only a handful, probably less than ten people, who are willing and able to run the incarnate content as well and as clearly. I've had a couple of runs which were so badly done I've quit halfway through. Being called an idiot publicly for doing exactly what everyone else has done for dozens of runs because the team leader wants to run it as quickly as possible despite at least half the league wanting to get the badges isn't fun. Team leader, team leader rules. Team member doesn't like team leader rules, team member quits team.
Aaaaaanyway up, Heather is a good and quick way of getting emp merits and salvage. The majority of times I get common salvage, but sometimes I get a higher reward. One thing to remember is that enemy level doesn't affect reward. The drop rates for each enemy and rewards table doesn't change on -1 or +4. If you drop it to -1/1 you can literally run from one end to the other in around 15-20 minutes, if you only defeat the absolute minimum enemies required. So first mission just the assassin at the end of the map, second mission three mobs with an ambush at the end, third mission click three glowies and one mob, final mission a timed fight at the end. You may need to clear a few bunched up enemies while trying to click the glowies, but you can run past almost everything. so for 15 to 20 minutes work you can get either 1 emp merit, a guaranteed random common and a roll on the reward table, or 2 emp merits and a common.