I can see that the option to run a report that collapses sub-classes is crucial for your business, feelinlikeanidgit. 

Rest assured our product engineers are continuously discovering new ways to adapt to our customers’ needs. Your feedback helps our Product Development team determine which feature will be implemented in the next future update. 

The change is also based on how popular a specific feature request is. I want you to know that your voice matters and that you being able to use QuickBooks seamlessly is my top priority. I'll be sending feedback based on this interaction to the Product Development Team for determining what we need to implement moving forward to provide you the best QuickBooks experience.

For now, you can also customize some reports to group the information info by class. To do this, go to the top of a report. Then, select Display columns by ▼ (or Group by ▼), then Classes.

You can always run reports to check sales, expenses, or profitability by business segment. This link provides an overview about what reports to use: Run reports by class.

Don't hesitate to post again if you have other QuickBooks concerns. We're always open to provide the information that you need. May your business grow and bring you prosperity!