The main reason why people are complaining about this event is that they think it's unfair to get killed while doing any of the quests but they don't realize that anyone can come and kill you while your questing on any other planet while you are leveling (besides the Empire), and a lot of people liked Illum a while back and requested that they bring it back. Guess what they did and they gave you an option to PVP or PVE. PVP quests anyone can attack you, the PVe quests only the Republic can attack you, just like any other daily on any planet and just like if you are leveling. So choose which one you like and don't do the others.
Problem solved.
P.S. if you think you have a right to access the pylon because you were there first, you are asking to get ganked and I would definitely kill you for that pylon, got 3 toons to do the event on and a lot of people are thinking the same thing as me.