We’re currently working on defining a compact mode experience. I will post more details when we have more to share.
I don't understand why on the newer crop of MS tools and OS there is almost none of the customisation options that we had in everything from W95 through to W7. I find the Teams GUI a chaotic mess after Slack and the dark colour scheme painful to look at. i'd prefer to be able to set my own colours for it,and my own fonts and so on. Same with all O365 tools and I seem to remember it was the #1 issue by far before O365 was released. Especially with Word.