You know, seeing the drip, drip, drip of continuing critiques and unhappiness about this, it occurs to me that Microsoft might have consulted with (and still might profitably do so) some of the major editing societies -- the people who are most likely to have a stake in the matter and who are most likely to make targeted suggestions (thus increasing the productivity of the software design process and making the final product more marketable). To not, apparently, have done that from the outset (I've seen no evidence of it in ACES, for instance), seems to me to be a major flaw in the MS team's approach to this.
- ACES: The Society for Editing (used to be just media copy editors but now encompasses a wide range of editors across industries) https://aceseditors.org/
- Society for Technical Communication: https://www.stc.org/
- Editing Canada: Like ACES in the U.S., a wide-ranging group: https://www.editors.ca/
There are other potentials, but these are the ones that come to mind with the broadest reach.
I know there is a push within MS to counter Slack and other collaborative platforms with Teams and things like this. But instead of risking damage to your brand (especially since this forum is, on balance, little known and the reaction you are likely to get when fully released to the wild may be even stronger, based on my conversations with those who were unaware), I'd encourage the MS team to argue internally for a small pause while they can approach these groups and get better feedback.