I've had a squad of Games Workshop Space Marines kicking around in my stash of miniatures for a couple years that I finally dug out and started to paint. In looking through the various chapter options I could paint, I decided to go for Dark Angels--I liked the bizarre hybrid of armor and monastic style. I paint them a lovely shade of primarily dark green, and start thinking, do I want to actually build up an army? What else would I get and/or want?
This leads me to poking around on the internet and finding out that, first, there was a major revamp to the Space Marines in general about three years ago, but the Dark Angels chapter wasn't really made up to date as well. The miniatures line for the Dark Angels lacks a number of unit types which would take a lot of work to model. They've never really bothered making the chapter rules fit with the current edition. It's kind of an eternal cycle of making things work for one faction, then the next, and never really building a coherent, unified, here-is-how-all-the-sides-work set of rules. They'll probably get around to fixing up the Dark Angels eventually, but not until they have the miniatures to support it, so until then, they'll pimp other factions and units.
Oh well, I'll put the space marines on the shelf.