I spent some time last night trying to anticipate the detail of how to make test-coverage stats useful to the development process (either reported in the visual context of a gantt chart, or otherwise). I couldn't come up with a good scenario--at least for an individual dev. It might have some general use for a team.
I'm having a hard time imagining that when I sit down to create a backbone app that I'll draw up a gantt chart first. Last week blocking tasks (stuff that needed to get done before anything else could progress) materialized on the go, and were hard to anticipate, especially when we had two major refactors.
I suppose this is why Agile development is a thing.
Long story short: I still like the idea of some sort of project aide, but my confidence in the viability of a gantt chart is wavering. -- I'm now wondering whether an agile-like tool can be scaled down for use by an individual.