Of all the overworld gimmicks this gen, PokeRide has a high likelihood of returning next gen.

So in future games, which Pokémon would you like to see become rideable? Preferably those that add something mechanically unique to the feature? Some ideas from me:
>a Golduck which you ride on the shoulders of. Jesus walks across water if constantly in motion and floats when idle, propping the trainer above water in the process. Can also be rode on land; there is seamless transition between the two
>a Probopass which you piggyback on; acts as a manual repel, with the exception of Steel, Rock, Ground, and Electric types, which have an increased rate of 300%. Has the slightest chance to summon Pokémon of those types even on routes where there otherwise wouldn't be any
>a Mamoswine which is slow (not much faster than walking) but sturdy, capable of navigating icy terrain without sliding. Also stomps tall grass which temporarily renders it unoccupied by Pokemon (only after dealing with any initial encounters)