rm_idiots.now that's pretty rude, but given your alias, your are a troll and playing the part correctly.
Light leaks and stuck/dead pixels are old problems associated with LCDs. I heard about them 6 years ago, and I am sure they are as old as LCDs. Stuck/dead pixels are far less common today than they were 5 years ago, so I assume the public outcry was so great that companies actually did something to reduce the problem (cleaner labs probably). The fact that dead/stuck pixels became commonly mentioned in warranties and what constituted a "broken" display demonstrates how much in the spotlight that particular problem as become.
Light leaks are a little more elusive because under 98% of display conditions they are not apparent. That's probably why they public outcry is less and they still show their ugly head to wildly varying degrees. The two iPad 2s I have played with in conditions that would enable me to confirm light leaks, both showed them. I also see that online either the people without the problem are very quiet or everyone has the problem who cares to look. At this point I would not hold your breath that a replacement unit would not have the same issue, and by returning your iPad you do risk getting one with a worse light leak and/or stuck/dead pixels.
Having said that, the only way Apple will care to fix a problem this slight is if they get enough returns to make it worth their time. I am betting that this problem will get fixed because Apple users are a pretty picky lot, but it'll be several months down the road. Right now Apple is far more concerned at filling the inventory pipe than anything of this nature.