I'm a Microsoft flag waver- for the last 20 years. It's been core to my career.
I absolutely hate Sharepoint, and I hate the way they are integrating it into everything.
Recently I had someone come to me saying that they kept sending out files, and nobody outside of our organization could access them.
Their files were saved to Sharepoint (the default, not their intention) and when they 'attached' the file to an email, Outlook went ahead and sent a link, rather than attaching the file. The link went to our internal Sharepoint, which people on the outside could not access.
I understand all the reasoning for this to happen. But the problem was that this was just a naive user clicking 'Sure, save it there, that is cool' then being stuck in this problem. I told them to save the file elsewhere...but now they had two versions of the file and confusion ensued.
Please, please, please don't make 'further integration with Microsoft products' the default!
And no...nobody has ever wanted to use Sharepoint more. I've been around it for a long time, and I don't understand what the heck it is supposed to be. Ignoring all Sharepoint is a valuable skill.