Yanmega is new pokemon , it does not need a fresh start.
Seviper maybe needs to leave because it's from Hoenn. But if there is no new snake it'll stay.
Mime J. won't leave so fast because I don't know if James can replace again his "baby pokemon"
Carnivine is new from Sinnoh, it can stay for more sagas , like Victreebell that was three sagas. Also I don't think the writers will replace it so fast because Cacnea left in Sinnoh.
And Wobbuffet- I'm sorry but it will stay. It's like the forth member of team rocket. Look the episode pictures and see..
Seviper maybe needs to leave because it's from Hoenn. But if there is no new snake it'll stay.
Mime J. won't leave so fast because I don't know if James can replace again his "baby pokemon"
Carnivine is new from Sinnoh, it can stay for more sagas , like Victreebell that was three sagas. Also I don't think the writers will replace it so fast because Cacnea left in Sinnoh.
And Wobbuffet- I'm sorry but it will stay. It's like the forth member of team rocket. Look the episode pictures and see..