While I appreciate you listening to feedback from viewers, as an older reader I want to reassure you that what you do is fresh.
Read manga long enough, and the cliche dialogue becomes so predictable you can read raws and tell what's going on without knowing any japanese.
In a medium designed for entertainment, it just gets boring. The viewers upset by your liberties are probably too young to have come close to any kind of manga burnout, but for me, I'm just looking for something fresh.
And fresh is in short supply these days.