trevanian
Rear Admiral
B5 spoiled me on the A / B / C plot thing - but there it had continuity. The separate arcs kept several balls in the air, and often a B or C arc turned into the A plot in a few episodes. I prefer that, frankly, as the series is then a continuing saga, instead of a collection of syndicated episodes with no theme. Some TNG eps should have been run this way, IMO. The Child would have been so much more convincing if Deanna had turned up pregnant halfway through the season, and had the child near the end. When Q lost his powers, that should have been the B or C plot for several episodes.
I've always thought YESTERDAY'S ENTERPRISE had a premise that would sustain a good-sized arc, if not a whole season, while giving the actors a chance to play their characters in a dramatically different light (literally, the lighting was much more interesting on THAT version of the -D) and context.