It would make more sense to make some changes to PvP
Firstly, victory conditions, if the match times out the game would decide a victor based on characters remaining, if the same amount of characters are left then the average health percentage of both teams would be compared, whatever team has either more survivors or more health left wins.
Turn timers, when it is your turn so you can't wait it out to win after damaging the enemy a little bit, you'd have 10 seconds to make your move before the next character moves, missing a turn would inflict a stack of penalty, 3 stacks of penalty instantly defeat the character. So you absolutely have to still play, the match time will not go down during enemy turns. This would be to try and ensure that a draw is brought about naturally and not forced.
Winning on a draw or timeout will award significantly less points in territory wars but still eliminate the enemy team, same for grand arena