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Ash should've transferred all his Pokemon (including his Alolan team) to Cerise Park to interact with Goh's. I would've loved to see more episodes take place in the park; I really liked the few we got in Journeys. Then, when Ash and Goh traveled somewhere, Ash could've taken a variety of different Pokemon with him - same with Goh, with them switching up their teams regularly. Of course, the episodes would've had to have been structured differently, to account for Ash/Goh needing to use their Pokemon frequently, but come on, between the PWC, PM, and research assignments, a good writer could've come up with a number of ways to make use of all the different kinds of Pokemon Ash and Goh own.
