I rewatched "Fail Safe" and "Zero Hour" right before watching this, and I saw "Descent" last time I wrote Wes+SGC; Paul never has much screen time, but there is enough to get a 'voice' for him. (Which reminds me. I really must get back to the Paul+Serenity crossover sometime soon).

The thing with Faith and Vala... I didn't actually like Vala all that much at first, what with all her deliberate false fronts, except to think here was finally another fiery woman who might challenge Daniel, until sometime around the episode when she had the amnesia, and then later, ack, that scene in "Unending" that I hate.hate.hate but which really did a lot of characterization illumination for both characters involved. Not happily, but in ways that make sense. Faith's still a lot more resilient than that. Which, I guess, is why I never can pair her with Daniel, but I have no problem pairing him with Buffy-- Buffy's a lot more scarred by her past than Faith is, to me.

(edited for clarification)