In my head canon "Orville" is the 10th Trek series (counting 'Picard' and 'Lower Decks' into the mix). Let's suppose the Federation collapsed sometime after 2399 and a period of chaos, its former members decided to build another federation but decided to give it a new name. Planetary Union it is


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And I suppose the new federation decides to implement a more laid back rule for its officers and missions (no prime directive, no transporters, etc), then decided to admit new members like the Xelayans and Moclans while encountering new enemies like the Krill and Kaylons. See where am I going with this


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