I would make a Follow Me options like in SS/HG but first make a lot of animations spirits.
Then i would make a new event with team aqua / magma. then a event with aqua / magma and meteor.
Then make it possible that event pokemon can reaper if you didn't catch it the first time but but exsedentlig made it faint. Like after ekstremly many days, steps or something.
But Ame make the Follow Me, i know it takes time, but it makes the game beter. It dose not have to be in ep. 11 but mabye in ep. 14 or 15. but NOT after the victory road.
Plz, <3 U