Yeah dev home is pretty much useless at this point.
Back when it just launched, they marketed it as it would introduce cool stuff to developers like, what I'm waiting for the most, git repositories Explorer integration. But all we have is a constantly crashing app and two extra widgets for the widget panel.
Dev drives are also cool but they're the part of Windows anyway, no dev home needed.
Instead of io stuff I just use it as a current snapshot of my dev stuff including repos. Super-easy and super-fast to sync to my other devices just as a vhdx file over any wifi network. Yeah it's not dev drive specific feature but still, I started doing so because of dev drive