I’m on my twelfth session or so, and yes — most of the sub-systems have at least made an appearance so far, but I don’t think we’ve begun to plumb the depths of the game yet.

Most of the published adventures and campaigns are very high in quality. I haven’t run any of them (because I changed the era of the game) but they’re great for ideas and the “Grand Campaign” that Eloy Cintron mentions is a huge temptation.