You're very limited in slotting for those, you can't enhance what they do. At all.
For me, here's how I slot them and call it a day:
Sonic Siphon: 1 Acc
Disruption: 2-3 End Red
Clarity: 1 End Red
That's it, all you can do is make Disruption less of an endurance nightmare to manage.
Look at the bright side, you have plenty of slots left for other powers.
My edit to answer your edit - good question. I've seen suggestions to have the power increase +Res for you and your team. As of now though, the name is deceptive, or at least not consistent with how the term "siphon" is used in this game.
Global = Hedgefund (or some derivation thereof)
Thanks for the answers, and yea hahah, I was actually thinking siphon as not being remotely related to it's definition.
Perhaps the devs once had plans for you to steal resistance from the enemy, then decided against it, then decided to make it live.
"Fascinating. I'm not bored at all, I swear." -Kikuchiyo
Do the sonic debuffs/buffs have any available sets to choose from or do they simply get nothing like it would seem?
Powers in question:
Sonic Siphon
Disruption Field
Clarity
I'd just slotted for end redux... but that does seem like a lot of powers to have not be able to get any bonus from.
Should I just get my bonuses elsewhere and ignore the problem, or does sonic siphon allow for something like ranged damage for no reason?
*edit* I guess while sonic resonance is in question, where is the siphon part of sonic siphon?
"Fascinating. I'm not bored at all, I swear." -Kikuchiyo