Yes, it would be. Part of the motivation for the bundling work was to make sure grist-electron could run offline with selected custom widgets. We needed this since we implemented the Calendar widget as a custom widget rather than something built into the codebase.
There’s a lot of cool stuff really close to working here. At Grist Labs, we had to shelve this line of work in favor of other priorities (like forms) but if you were interested in poking at it I could give some pointers 