We shouldn't lose LP for D/C's or first time dodges in champ select.
Often times the client can bug out. Other times your internet can simply D/C as soon as you make it into champ select. It is infinitely frustrating when the client bugs out and prevents you from being able to ban a champion. Thus forcing you to dodge and losing LP.
At minimum, it shouldn't make you lose LP if it is your first dodge of the day.