Built the new Stitich like Strapi
Advanced Nodejs/React/Vue/Angular Developers have tried Strapi for sure once or at least heard of it. It is a headless-cms/graphical UI for building APIs, The first thing that came into my mind when I tried Stitch + the new GraphQL feature was, Nice product but the UI Strapi gives you for creating Schemas/Data is something MongoDB needs in thair Stitch App to take off since nobody does this currently.
So my suggestion for Stitch is to have a Strapi like UI so we don't need to write Schemas manually, I'm sure this product will take off since everyone I talked to would use it over the current Stitch!
MongoDB is a big Company so why not maybe talk to the guys of Strapi, it is OpenSource so MongoDB could have a managed solution for it like Stitch and also people can host it on their own as we can with MongoDB, but like I said most people will choose ATLAS because it's managed by professionals. The best would, of course, be to acquire Strapi + Team but this is something MongoDB needs to decide.
For those not familiar with Strapi I suggest trying it and imagine having the possibility to build Strapi Apps in MongoDB ALTAS, it will be for sure an amazing experience.