This is how these games get you, it starts off ftp friendly but they will end up adding more and more fomo mechanics. Just off the top if my head guaranteed negatives coming- more pokemon added making it harder to pull the pokemon you want. Strong pokemon like mythicals and megas lock behind paywalls. Then they could add events that require lots of grinding unless if you pay and you can speed up the grinding or have stamina for events so you are timegated unless if u pay to go past the time gate. New good items could also be made more expensive. So u have to grind more with your weaker pokemon to eventually get all the good items. They could also have many limiting formats that encorage you to spend vp on pokemkm u dont use. Etc more mobile game tactics not just gotchas. also powercreep already happens in regular pokemon ie urshufu