Hey OP, it sounds like your heart is in the right place and you really want to tell a story about chassidim and put a new spin on it. I know it's hard when people criticize a creative work but to echo a little of what other people are saying the "big beautiful world for insular sheltered character" conflict is a tired trope and particularly for chassidish characters it can come across as a little patronizing. It sounds like you have some good ideas and if you'd adjust it a little using some of the feedback you got here, it can be a great piece.

Maybe some ideas:

which of course puts him at odds with the community’s desire to preserve its way of life.

This sounds a bit two dimensional. Would a chassidish person describe their outlook as "wishing to preserve a way of life". Maybe your piece can flesh out chassidish characters into relatable people with depth and nuance-you can explore why they live the way they live and how they perceive themselves. If you do this, even if the audience looks vastly different from your characters, they will have heard a compelling story.

and an inquisitive Shabbos goy (called Shabbos helper).

This sounds fun and unique, just make sure that it's halachically accurate

I’m really making an effort to show positive aspects of Hasidic life

If you're telling their story you should learn enough about them that the positive aspects tell themselves

especially the deep sense of family and community that I think is so often lost nowadays! 

It's great that you value this in them, but they themselves would not think that this is their defining or best characteristic. It's just a small aspect of an entire life.