[Blau]

live pvp not doable in this system

also no other game uses live pvp for these kind of systems and they are extremely popular

different elo league that supports only live pvp is only possible option

so you better think how to improve computers AI

Hmm...
Well...
Then first most I'd advise to split CPU PvP and CPU PvE.

We should include a battle tactic choice system.
E.g.
You  can choose for each Pokemon a "Role"
Let's keep it at 
3 for starters.
Sweeper
Tank 
Wall

Now, if youd pick Wall as a role you'd have sub categories, 
Like
Stat destruction 
Stall
Status Spam 

Thatll decide which course of action the AI chooses.
Example 
You have 1 healing move, 2 status inflicting moves and 1 Stat reducing move.
You've chosen Stat destruction.
Then the AI's priority will be reducing stats before all else.
And then start using the status inflicting moves while still healing if dmg % taken gets too high, a defeat could be happening or a certain amount of hp % is met.

So i think that'll be an overall better course for CPU PvP.
Cause that'll allow you to somewhat adjust your CPU team to your playstyle.


That regarding : is it really impossible to get the AI to switch Pokemon ?
Cause switch outs are so so so important for it.