I don't know what people are complaining about. What you thought they were going to hand out legacy weapons for all 8 classes in one event? Then what is there to look forward to on the next event?
Of course they are going to spread it out, my trooper will benefit from this event, hopefully the next event will be better for my force users.
Unless the next event comes out before August 25th, I won't worry about it. Sad to say, but BioWare has, without a doubt, proven themselves completely clueless about developing and managing an MMO. Of course, the sub numbers already prove that.