This is implied to have happened once (mentioned in the penultimate episode of Angel). I also like Angel/Fred and Spike/Fred (basically I like Fred, she's the character I ship with everyone in Angel at some point or other), and I see the potential of Angel/Faith and Angel/Willow though I don't ship either personally. I actually do ship Spike/Faith, which I've just noticed is on the list. I could have shipped Willow/Xander if it'd be done differently to how it was done in canon.

Totally ship them

I have shipped Buffy/Willow forever. Spike/Fred no but I got so jealous when Illyria said she wanted to keep Spike as her pet. If Spike is not interested can I be his stand in?

Also it's not listed but Fred/Willow.

^That one was kind of suggested in the Angel season 4 episode where they both meet (can't remember the name currently). They were cute.

Could have been another cute lesbian couple on the show. Don't you think so?

I think these two would of definitely hooked up at some point as well as Buffy.