Hello there, alexyates.
Thanks for taking the time to share your thoughts. I'd like to provide some information about the usage limits in QuickBooks Online.
To clear up some details, one thing I'd like to mention is that if you are currently at or over the limit, you will be able to keep all of these items and use them, even after the limits go live in April. Additionally, any Account, Class, or Billable User that is inactive will NOT count toward the limit. The difference being, you wouldn't be able to add anything to these groups or make items inactive then active again.
This article provides additional information on the new usage limits: https://quickbooks.intuit.com/community/Help-Articles/What-are-usage-limits-in-QuickBooks-Online/m-p....
Feel free to comment below if you have any other questions.