Scav just needs survival. His line in the sand ability potency is really high. Don't worry about potency on him..
I have to say that I feel like this kernel of wisdom is just utterly wrong, and terribly misleading. There is no built in additional potency to the Line In The Sand ability. None.
There is an 80% chance that the ability triggers per instance, but that has nothing to to do with potency, that is how frequently the ability will attempt to apply the Thermal Detonator debuff per it’s triggers in the dability description.
The Dubuff itself will still be run through the potency/tenacity check to see if it applies.
(That is, check to see if ability triggers with 80% pass rate. If pass, attempt thermal detonators with 100% Potency+jawa scavenger potency - target tenacity = success rate. With the caveat that there is always a base 15% chance to resist debuffs unless otherwise noted.)
Jawa Scavenger should be loaded up on potency by default, not saying he doesn’t need survivability as well, because it is a Unique Ability and expires with him - but I would consider 1 potency set and a potency cross or two potency sets (and potency as a high priority secondary across all mods) as the absolute minimum for him as he doesn’t have super high base potency as a character. The primaries can certainly lean towards survivability options, along with the other mod set(s).
Not really sure where the recommendations for jawa and dathcha come into play either, their debuff abilities are only 50 - 75% chance of trying to apply debuffs (although there could be some merit in your particular thinking against GG teams, as there is some anti-droid built into the kit and getting those stun to stick could be helpful) - it is a good idea too, I personally usually use Zam Wessel and my b-line bounty hunters as my TD cleanup squad if I screw up in GAC or if someone leaves a couple droids standing on the first go in TW - just because my BH are a little ahead of my jawas for gearing, but the same principles apply.
