Maw changes only nerfing bruisers
I'm not sure what the exact numbers are but this is what's stated by Riot (at https://na.leagueoflegends.com/en/news/game-updates/gameplay/patch-811-early-look?utm_source=LeagueClient&utm_medium=OverviewTier1):
"Maw of Malmortius "Better stats and a shield scaling nerf marksmen won't care about." More attack damage More magic resist Magic damage shield no longer scales with magic resist"
This might seem good, but it seems like it could be a big nerf to bruisers. Sure, marksmen won't care about the changes to the shield scaling nerf, but now bruisers won't get any bonuses from building mercs and/or an MR item (say Visage, or abyssal?), but marksmen (probably the last role in need of a buff against assassins) are going to be getting more MR and basically the same shield they were already getting?
TL;DR This is just gonna buff marksmen against assassins and nerf bruisers overall.