In terms of the player approaches and variables. Let's try to break it down into the smallest components.

For player approaches:
>choosing one move out of 4
--that is the opponent's weakness
--that will buff or debuff
--that will punish swapping
>swapping
>using an item (non-pvp)
>running (non-pvp)
>catching (non-pvp)

For variables:
>type and effect of moves used
>speed advantage
>level difference
>weather effects
>weaknesses
>held items
>number of pokemon in party difference (max 6)

Do you agree or disagree? Would you like to add or remove anything?