Some thoughts:
- Peoples twinking on insanely high drains at insanely low levels needs to stop - over 1k PM TS at L56 anyone?
- When the drains land, it's all over.
- Perhaps, make drain (de)buffs scale to your level, and give them an AAO (de)buff to make up for the nerfing.
- Nanite drains would look like this on the target:
--> On victim -250 skills @ L200, -200 AAO (at every level).
--> At L118 this would mean -148 skills, and -200 AAO.
--> On self +210 skills @ L200, +150 AAO (at every level).
--> At L118 this would mean +124 skills, and +150 AAO.
Numbers would of course be up for change. This tones down the extreme laddering, and stops completely crippling the target. Yeah, trader becomes a lot harder to hit thanks to the AAO debuff, but at least your weapon won't be 0%-25% OE when you do get in that lucky hit.
Another possibility would be giving every drain the same "advantage" (de)buff to skills and, simply make the better drains debuff more AAO.. this would stop laddering just the same but still give an advantage to casting higher drains.