First of all, congrats on 700+ in one week!
That sort of exposure is great and something I could not or still can not even fathom as this moment, and mind you, I am only a month in a half in, starting from scratch with no following.
I can totally understand your stress though, you want to tell a story that is enjoyable to yourself as well as your readers. And there's a certain level of expectation that comes with it, for both of you.
The thing you must ask yourself is: is this a story that I truly want to tell before I kick the bucket? Or is this a story I want everyone to accept??
And the answer is, you cannot please everyone, but you can please the one person you do know, and that's you!
Even long running professional mangas such as Naruto got a HUGE hell of a backlash from it's readers because of its ending, to the point a online petition was made just because a certain pairing wasn't canon!! JUST because of something silly like that.
I feel like this comic should have ended differently myself, there was just too many hands in the pot and I think the creator was trying too hard to please the fans with a rushed, neatly tied, everyone-is-happy-and-married ending.
It severely strayed off from his original intentions because of fan base expectations and probably the industry in general. It didn't mean I liked his work any less, even if I didn't agree with some decisions in story making.
The thing is neatly tied stories and endings or predictably can be just as disappointing as something that comes as a shock to readers.
As your story goes on, you may make changes that even surprise yourself. And you may challenge your characters and yourself and that's true story telling. It should be about your own journey and hard work.
Again, you are never going to please everyone, especially on the anonymous internet where haters are gonna troll; so just do what feels right for you and make your story something you are proud of regardless!^^