@greenmoon Appreciate the feedback! I should mention that the impetus for us cutting these features isn't to say that they're useless, or that we're giving up on them, but only that their usefulness in core was overestimated when initially added.
For users like yourself and your community, you may continue to find benefit in these features like the taskbar and sounds... there's no reason they cannot still exist as a plugin.
I'll consider moving sounds over to a plugin so they can continue to work
Re: taskbar – I still personally do see benefit in minimizing the composer (especially on mobile), in cases where I wish to read the thread some more. We'll likely come up with some sort of alternative UI for this. It might end up looking much like the taskbar, but it wouldn't be a separate subsystem, but somthing bespoke to the composer itself.
The taskbar as an experiment as an extensible module wasn't worth it in hindsight, that is all