New Queue's are a little.. dumb

This new queue system is cool in theory with the look, but thats all i want it for... the part where you NEED to lock in or else you get kicked is stupid. What if i just want to pick my champion, then go and let the time tick down so i can go do something before the game, such as get food or use the bathroom? Can't do that unless you can time it and get back and lock in, or else you're gonna dodge and lose LP.