I think they are testing many things with Legends: arceus. They are testing what they can change , what they can remove, without risking the gen 9 games . Remakes usually sell less than new gen games, so i think the remakes/prequels/sequels are the place to risk and try something really new.They expect remakes to sell around 12 millions and new gen games to sell around 16 millions. Losing 20 % of the sales of a remake would mean lose around 2 millions sales , and losing 20% in new gen games mean losing over 3 millions sales.
In pokemon LGPE, they tried to change the EV system , the catch system, to put all the pokemon in overworld, box accessible from anywere, and cut the pokedex, while assuring profits with kanto games. There are many gen1ners that for sure would buy kanto games. They also tried to bring pokemon go players to console games. Most people complained a lot about most changes , most liked overworld pokemon and accessible boxes, but some complained about the lack of random enconters. So, in sword/shield they put random enconters and overworld pokemon together, and cut the pokedex, because people didnt complain enough about it in lgpe. In Sw/Sh, people complained a lot about dexit, but bought the games anyway. The only real change sw/sh brought was wild area, and that doesnt cover all the map. Gigantamax is just the new megaevolution , and you can just ignore max raids for most of the game.
In legends ; arceus they will test multiple changes, like overworld battles, lack of gyms and trial captains, let battle pokemon to catch it or throw the pokeball on it optional, explore old mythicals and legendaries instead of new ones, lack of trainer battles, big changes on battle mechanics. The most succesfull changes will be on gen 9 games, or in gen 10 games if its too late to gen 9 be drastically changed.
In pokemon LGPE, they tried to change the EV system , the catch system, to put all the pokemon in overworld, box accessible from anywere, and cut the pokedex, while assuring profits with kanto games. There are many gen1ners that for sure would buy kanto games. They also tried to bring pokemon go players to console games. Most people complained a lot about most changes , most liked overworld pokemon and accessible boxes, but some complained about the lack of random enconters. So, in sword/shield they put random enconters and overworld pokemon together, and cut the pokedex, because people didnt complain enough about it in lgpe. In Sw/Sh, people complained a lot about dexit, but bought the games anyway. The only real change sw/sh brought was wild area, and that doesnt cover all the map. Gigantamax is just the new megaevolution , and you can just ignore max raids for most of the game.
In legends ; arceus they will test multiple changes, like overworld battles, lack of gyms and trial captains, let battle pokemon to catch it or throw the pokeball on it optional, explore old mythicals and legendaries instead of new ones, lack of trainer battles, big changes on battle mechanics. The most succesfull changes will be on gen 9 games, or in gen 10 games if its too late to gen 9 be drastically changed.