New named Dropbox structure

First post... but today, I received my "Important changes to your Dropbox account" e-mail.

We have a ton of client files, organized by client, with access restricted by team groupings. The first thing I did was postpone the 'upgrade' until Oct 14th, to give me time to find a new solution. 

Honestly, I am having a hard time (a) understanding the e-mail's contents, as well as the "upcoming business team changes" help document, and (b) I am struggling to see what problem this is solving for me or anyone else.

One thing is for sure: this looks like a great time to move our agency off of Dropbox. I've been considering this for some time for the following reasons:

1. The whole 'off-line/on-line' files things has been a real headache, as Dropbox seems to quietly change the setting back to online only, from time-to-time, which makes syncing with a local copy for editing difficult.
2. Some of my teammates have had sync issues with M1 macs, resulting in automatically generated conflict copies being created.
3. Sharing a folder with people outside of the organization is difficult, unless you purchase a Dropbox for Business seat for the recipient.
4. For working files, you really need TWO copies of your files on your hard drive, which means my teammates are all lugging around external drives for Dropbox to hold the complete copies of their client files, as most new laptops don't have a ton of free space.
5. Dropbox recently changed the restore feature from 'forever' to 'one year', unless you pay an upgrade fee.

And now, this forced re-organization of content that looks to a ton of work on our side to get back to where we are, today.

I was an early adopter of Dropbox, but I think we are moving our content elsewhere.