Champion Pets should die when they do -- Feedback on Gameplay

When summoners die their pets should go with them, I lost a match AFTER all the other player's champions were gone, because their pets were still on the board for a good 2 to 3 seconds after they died. I was also in a match where they played as many different summoners only to level 2 and played multiple versions of the same summoner. Not even level 3 champs and avatars stand a chance and its too easy a build to ramp up to the point where its impossible to beat them.