I suppose it depends on what one is trying to do or whether a lesser-used feature in one of the Adobe apps is essential for a particular job or a particular person’s way of working.
For me, probably 90% of the features I depend on are there in one form or another. For the remaining 10%, there are workarounds or other, more awkward ways of doing the same thing. Then there are the things that people don’t know they need until they use them a few times and wonder why Adobe hasn’t done something similar.
Just three random pro and con examples out of dozens.
I find InDesign’s packaging feature to be extremely useful. It sorts through all the unused stuff, collects all the images and fonts and bundles them up into nice, neat, self-contained folders for archiving or sending to clients or printers. Affinity Publisher does not have this feature. It will gather up all the images and place them in one location, but not the font files. Unless it’s done just right, all the linked paths to the new images are lost and need to be tediously relinked. InDesign never has this problem.
On the other hand, both Publisher and Designer will open up PDF files — almost as though they’re native Affinity files. I can’t count how many times people have sent me PDF and asked for various changes to be made to them, which was never what Adobe intended for PDF to be. PDF is an end-file format, not a working format, so I understand Adobe’s reluctance to develop tools that let people start using it as more than that. Even so, people still send PDFs, want changes made to them, which turns into a huge, time-killer with no good workarounds. With Affinity, most PDFs can just be opened up and worked on, which violates the whole original point of a PDF, but can still save a ton of time in a pinch.
The Affinity Suite apps have a feature called Personas, which Adobe software does not have. If you’re working in Publisher, for example, and need to edit an image, you can switch to the Photo or Designer personas and work directly on them without leaving Publisher.