They took away our %MATT from Haku buff to make us "more competitive" with other mages when they could've just made it into a self-buff like it always has been. We got some damage back with the 25 star update only for this "revamp" to further nerf us by taking away our 30% Final Damage, 40% IED, nerfing foxfire, taking away stance and nerfing the boost nodes from Shikigami. If it weren't for the fact I still love Kanna, I would've swapped over to a different mage class. Time and again, GMS has proven that they don't care about us Kanna players.
Phantom main here, so this might not as be relevant as someone who mains a Kanna, but I do have an equally funded Kanna submain. One of my friends told me about the nerf and did some testing. According to them, the nerf brings a solo Kanna down to 40% of their current damage. I don't think this nerf brings Kanna up to par with other mages at all, if anything, it's about to make them one of the worst classes (Jett withstanding).
And just as a reminder of what Arwoo said previously about the re-evaluation of Haku's buff.