Boon corruption mechanics ?
It’s been a little more than a month ;P
https://forum-en.gw2archive.eu/forum/info/updates/Game-Update-Notes-June-23-2015
Boon and Condition Conversion
Boon to condition conversion and condition to boon conversion has been standardized and is functionality changed. Skills that convert boons and conditions now randomly select from all boons and conditions on the target.
Funny thing is, I started using cele signetmancer mid-july…
Boon corruption is random since specialisation patch but it was a buff compared to the past because the corruption order was so stupid. Right now boon removal/corruption is in a low position because it is inherently much much weaker then condition removal.
A reason is that you have to hit a foe with a skill to remove/corrupt boons unlike most condition removal skills. Necro signet traited goes through most defense and that is considered OP (https://forum-en.gw2archive.eu/forum/professions/necromancer/Signet-of-Vampirism-ignores-LOS).
Signet reaper is strong but it is not strong from it’s boon corruption capabilities. It tips the scale from mediocre to strong but it is not that important. I run a soldier reaper with 2 traited signets and I’m doing fine.