Have they fixed the mis-feature where having an unfinished message in a chat causes it to be inconspicuously moved in a separate "drafts" section where it stays, away from human eyes and forgotten?

Collapsing lists and a Compose message button are considered "big redesigns" these days?

I hope this update introduces global preferences. Keeping preferences synchronized between different workspaces can be a real chore.

Making groupping available only to paid users is kind of a dick move.

Haha, why? If you have enough channels to need that feature, you should probably already be paying (in terms of how much value you are getting out of the platform). This seems like a subtle nudge to push some over that threshold.