Alt mode is essential, but it's also very cluttered. I don't want to see every fusion generator output at all times, it looks ugly!
That's why I envisioned a checkbox similar to stock interface settings. But sadly that required much more code that I'd like.

Anyway, here's a result.

Caution: some settings are moderately UPS intensive so be warned!
Thanks for the vast reference to the Hover ALT Mode - another deceptively small mod that's disproportionally hard to create.