I politely think there's a much better way to improve game health. Id be happy for some input. Open invitation to everybody. Let me know if I am being unreasonable or inaccurate. https://boards.na.leagueoflegends.com/en/c/gameplay-balance/nWGUJEtu-player-behavior-should-be-a-part-of-the-current-conversations-on-mmr-why-you-ask
Far as the DV bot. Doesn't look like its about, that things usually throwing out about 15-20 onto posters or threads in about a second. You might have some one who just DV if they see your name on a thread or some one who simply disagreed. Bit unrelated but If the DV bot keep showing up then I think we should as a start trying to link similar threads together. Mods don't have a tool for it so we could make our own "mega threads"
Now on topic. I don't think the universal Nerf Damage suggestions ideal. I just feel like it doesn't account well enough for individual kits and items. I think visiting champion Base stats and adjusting values and growths per level would be a good way to add in survivability because your able to target each class and champions in that class to have a longer time to kill and this comes primarily off game time.
you'd be able to highlight the champions whos strong suits are durability and as the stats scale of gametime/EXP not just gold gain your gonan find yourself seeing players behind from a bad lane hit slightly higher relevance.
I think the 20% wont impact snowballing all that much, you might be in lane longer but if your bullied away from cs you just don't see a power spike and if your kits been nerfed you again don't see a powerspike.
My 2cents.