Now that favorites persist when you start a new project in Pro (currently at 2.3), I find them useful - somewhat. But, as my list of favorite GP tools grows, it's getting harder to scan through the list because it's in the order the tools were added, not alphabetical. Same with symbol favorites. Personally, I'd find the favorites lists much easier to work with if they were in alphabetical order. I know there's a search, but that works best if you already remember the name of whatever you're looking for.