Well said Jeditricks.
I feel the lightsabers are a different story. I know they will keep making them as long as people are still buying them. I mean, there are only a number of sabers throughout the films. When MR runs out, they will have to double up. I don't really have a problem with that. The slight modifiactions and improvements only help people who came to the game late get a crack at them and make them different from the early releases. I know the updated versions won't really affect me. The way I see it is that if I want a ANH Vader saber, I'll buy one. If they come out with another one (improved, enhanced, SE, EE, etc.) I don't feel obligated to buy it. As long as I own one version of it I'm happy. Of course, completists will want every single one from every single movie and more power to them. That being said, MR should never release something the exact same way it was released previously if it was a limited edition. In other words, don't release another LE, SE or EE and just slap on a different edition number. That would be unfair. I bought a stormtrooper ANH blaster but I knew they will eventually release every single movie version. Am I upset? Of course not, because they should come out with the different ones. If I had wanted a ROTJ one, I would have waited. Just don't make all three the same though.
Personally, I like the way the FX lightsabers are being handled. They come out, people buy one if they want one, they aren't limited (you get a chance to get one for a long while) and they will get released again if demand comes back (windu for instance). That's a pretty good way of doing it. Not putting a number on them lets MR release them whenever they want and allows people to buy one at a reasonable price if they missed out. In the case of the supposed re-release of the FX Luke ROTJ, that's great for those that missed out and it looks like it will be improved upon.