>>47437391For starters, trick room should swap Speed Up with Speed Down.
There should be an “average” move gauge refill speed, for example, the average is 500, a slow speed is 280 and a fast speed is 760.
>Trick RoomPokémon with 760 speed:
500 + (500 - 760) = 240 Speed
Pokémon with 280 speed:
500 + (500 - 280) = 720 Speed
I’d give Trick Room to a Porygon Z user.