I’m a fan of separating services when possible.

And emails are a huge pain to change, so it might be worth considering an email service with your own domain name.

Sounds like your business needs to update their GPO to disable those features that aren’t useful for your business.

Except for disabling UAC, that’s basically like logging in and running everything as root on Linux.

There are also options that are open source, like OsmAnd+ or Organic Maps.

Sure, but the cost of batteries is at the point where even with replacements every 10-15 years you’ll spend less than you would buying power from the grid.

All of them, plus storage batteries are under much less abuse and are different chemistry that lasts a lot longer.