Misconception about the IMIW buff
Its a pretty common belief that IMIW's plasma dps has been decreased. While that was true during the beta, it isn't anymore.
Auntm.ai, which hasn't been updated yet, has the plasma damage for a r5 5* at 4880.4 over 6 seconds. That comes out as 813.4 per second.
The official MCOC website, which has the latest buffed values, says the plasma now does 10281 over 10 seconds. This comes out as 1028.1 damage per second.
Kabam should have stated the differences between the prebuff and post buff state clearly somewhere but we all know they love making stuff hard on themselves.