The lottery is currently flawed but so is the line system, dont know how many times I've seen 1 person in line become 6 later. Fact is there's no way to make a perfect system so everyone is happy, just got to adjust to the changes since there's no going back.
I think Comic Con allows 1 person to hold for 4-5 others in the lines. I know it is a common practice among the Hall H/ B20 line groups where individuals rotate standing 2-3 hours shift for each other to get into a next day panel.