Focus mode currently requires you to select the apps you want it to allow, one by one. This is very tedious when you have a lot of apps, as well as error prone.
Oftentimes I have just a few noisy/distracting apps I want to hide, and quite a few apps I want to always get notifications for or use. I don't want to have to turn off focus mode because I didn't think to allow my calculator app. I don't want to have to remember to allow my banking apps so I immediately get transaction alerts.
I would like it if I could choose to allow/block whole app categories, or maybe switch the rule to block only apps I select. Google's Digital Wellbeing app works this way and it feels much more useable.