Shorten the battle cooldown from 60s to 30s

How about cutting the “waiting for opponent to be ready” cooldown from 60 do say 30 seconds? Granted, it does not happen nearly as often as it used to (at one time about half of my battles proceeded as 60 seconds of waiting for nothing), but personally I have never experienced more than 30 seconds of waiting where the opponent would actually join the battle (usually the longest is about 20 seconds). After 30 seconds you can safely put down the phone with certainty, that the battel will not happen, and it is pretty frustraiting having to wait for nothing.

Otherwise great game, cheers!