You're exactly right on that, Jesse. Lego's model is working pretty well. Measured releases two times a year with a few special releases in between and then the occasional release for a licensed product. They have frequent sales, you can almost always find something marked down on a rotating basis, and product ships to retail usually for at least a year.
Plus you have all the promos to take advantage of on Shop.Lego.com or in the Lego stores; free minifigures, posters, free shipping, bonus VIP points, etc. They've built an extremely loyal customer base worldwide and nearly all system sets from the various themes not only maintain value, but quite often increase over time.
I can't think of any other toy line that really has going for it what Lego does. The only downside is the buy-in price on some sets. No matter how cool it is, it's hard to drop $400 on a set like the Death Star or Super Star Destroyer. When it comes specifically to SW, I'm at least satisfied that over the last couple of years they've made sure to have some offerings in the $10 - $25 range. There were a couple of years where their entry level was something like $29.99...not their best two years.