I liked the way Tabula Rasa played. It was simple, tactical, and smooth. The game itself suffered heavily from NC's desire to rush it out the door without proper playtesting, which did hurt it comin out, but it gained strength as they got shit patched up and improved. Hell, I played several (used multiple throw-away e-mail accounts) trials, and would've probably subscribed if I'd had a job back then.
Ya know, if they kill games like this, they should put the server software and shit up for grabs. I mean, it won't be making any money for them, anyway, and people would've likely bought it just to make their own private servers and keep the game alive, like they've done with Ultima Online.