Well yeah.
Having the duration slaughtered from 15 -> 4 secs sure is really, really harsh. So far, after the patch its really hard for any linker to keep soloing since mobs will move after 3 seconds (given that it takes around 1 sec for the skill to group them). Hopefully IMC could reconsider into extending its duration to around 6~7secs if anything.
What are your impressions about it :v ?