Moving away from Jupyter notebooks?? Most unfortunate and, unless there’s some equally good or better front-end substitute, a potential death-threat to Julia!
A proliferation of front-ends, unless one that’s clearly superior to Jupyter, would be disconcerting. Already one can use Jupyter notebooks with the Wolfram Language, Python, and Sage.
The beauty of Jupyter notebooks — and similar front-ends such as that for Mathematica — is the way one can mix text cells, input cells, output cells, and graphics all within a single document.
Such front-ends are extremely useful, e.g., for applications in teaching, at least at the college level.