Thanks for sharing your feedback, some comments
The carousel is too small in the first page of software center
there is a bug about it on launchpad
Software center should make up its mind on weather it should show up cli tools.
sounds like worth reporting on https://bugs.launchpad.net/snap-store-desktop/+filebug
Install percent keeps jumping in software center
There are issues with reporting for a long time, reported to gnome-software upstream on e.g https://gitlab.gnome.org/GNOME/gnome-software/-/issues/216
Snap packages seem to open a different Firefox instance with a different profile
Unsure what’s the issue there but seems worth reporting
Search results are not ordered by relevance
the issue seems a gnome-software upstream one (the 3.38 unpatched coming from Debian show similar ordering)
Cursors are sometime different between normal applications and snaps
could be an issue with that snap or with the theme, needs to be investigated
Do not disturb toggle transition issue
right, sounds like an upstream issue
The applications inconsistency is just softwares not actively maintained but without a better alternative. The dock spacing issues seems worth reporting. Also the settings icon screenshot seems missing or invalid?