Please tell me you are kidding. Please.
Thank you, I'll keep that under advisement.
As for the original question: yes, I would definitely buy the album and I would probably go see them. I love Lindsey and you know, I really like Christine also.
ETA: Now that I am a bit more awake, I shall eloborate on my initial answer. Let's focus on when Stevie's solo career took off up until The Dance. I'd say that her solo career was doing much more for her than being in Fleetwood Mac. Heck, Fleetwood Mac brought out 4 albums in between Bella Donna and The Dance, none of them with any noteworthy Stevie tracks on it, aside from Gypsy in 1982. (I'm looking at this from a commercial stand point, not a personal one.) Mirage was more of a Lindsey solo effort with a very strong Christine effort thrown into it, and Stevie was almost added as an afterthought. It remains one of my least favorite Fleetwood Mac albums, though I can really appreciate some of the songs when listened to them seperately, not as a part of the whole. Tango in the Night was again a Lindsey effort, but it were Christine's songs that became the biggest hits. Stevie's songs were mostly overlooked. Yet this album is one of my favorites (shut up, Gerald), despite Stevie's weaker tracks (which I personally don't think are that weak). The standout track to me is the title track. Though Stevie was a part of Behind the Mask, I've never even bothered with it, aside from Stevie's songs, mostly because of the lack of Lindsey's presence. I've tried to listen to it a few times, but it just doesn't do anything for me, a certain chemistry is missing. The same goes for Time.
So, in short, I think that even though Stevie was present on all of the albums in the 80s, her material was not really what stood out. I for one think that Christine and Lindsey are very compatible music wise, and I would really enjoy an album where they were the two prominent musicians/writers/producers/whatevers. It'd be interesting to see what they could come up with together, seeing I really like their joint efforts (World Turning, Hold Me, etc.) Though, by her own admission, drugs were a huge factor in why she didn't have any more solo albums, Fleetwood Mac was too. And seeing her solo efforts were much more memorable than her FM efforts in the 80s, I think she might have been better off focusing on that more. I still think that The Dance reunion was effin' great though, and everything that came after it also, including Trouble in Shangri-La
and Say You Will. Lindsey and Stevie without Christine works, but I really think that Lindsey and Christine without Stevie would work also. Maybe not commercially, but definitely artistically.