It's all good.
Bethrynna the Wizard and has three ritual spells (including Alarm and Detect Magic), and Meadowlark also has the feat, and has four wizard spells (including FF and Unseen Servant).I missed the fact that there were 2 other ritual casters. I think you probably mean that the classes have some ritual spells, but they need to be prepared, and I think taking the feat will allow those players to pick other spells (we'd all benefit imho). No one else from what I saw can cast wizard rituals, and I think having the possibility of spamming detect magic will be useful.
This is a separate issue, of course, and if you are doing it for the familiar, then you have an answer (unless you are also interested in Wizard Cantrips, which Magic Initiate would also work.I also love find familiar, and think it could be fun/interesting with a druid (ex: transform in a small snake or mouse or whatever, and have fun riding the owl, have the owl carry goodberries in a little pouch, etc).