Kirk,
I'm be curious to hear what the "significant" flaws are with Pasa, other than 6/7 interchange...unless that's what you're referring to.
A modest clubhouse and range, in my opinion, are not significant flaws. If you didn't like Pasa's clubhouse and range, then by all means never play CPC because they are both "lesser".
The back 9 at Pasa is about as good as it gets. Its easily the best "9" I've ever played as the routing, flow, and green placement is just superb.
P.S. 16 - as crazy as some say it is, it remains the neatest/coolest "green complex" I've ever seen!
IMHO, the "flaws" of Pasatiempo are:
1) the front nine is quite a bit less interesting and unique than the back, resulting in a somewhat asymmetric golfing experience
2) the sixth hole and the seventh fairway are straight and relatively uninteresting corridors. Both are too narrow for my taste. The first is also straight and relatively boring. The ninth hole is fairly bland (but the green complex is pretty good.) The twelfth and seventeenth holes are relatively weak, particularly compared to the rest of the back nine.
3) the housing abutting many holes is visually intrusive and detracts from the experience
4) Some of the greens are too tricked up for my taste. Too much contour relative to speed. The 8th green is exasperating. The 11th green ditto. The famous 16th green is, IMHO, fairly ridiculous. I hit a beautiful approach to the top tier of that green and ended up three levels down on the front fringe. Putting from the front fringe (where most balls collect that don't end up on the upper level) to the top tier, where the pin is usually located, is an exercise in frustration. Tiger Woods hates that green. This is one of the few things that I like about Tiger. : ) Even the par 3 18th green is relatively severe and an excellent shot into that green in no way guarantees a par. The greens can be fun in a Disneyland/Fun House kind of way, but they are not something I'd care to have to deal with on a regular basis.
5) I thought the approaches to 11 and 17 were too difficult for average players.
Things I really like about Pasatiempo include:
1) The second, third, fourth and fifth holes are great.
2) The tenth hole is astoundingly neat. Eleven is very interesting. Thirteen, fourteen, fifteen, sixteen and eighteen are very neat holes (green on sixteen notwithstanding.)
3) The course is hardly ever boring. It makes you think. It makes you anxious at times. But the rewards of success against such challenges are great.
I don't place much import on clubhouses, etc. But the clubhouse at Pasatiempo has a kind of 1960's vibe that I didn't think fit in with the classic era of the course. I'm sure I would LOVE the clubhouse at CPC (and SFGC as well.) I'm not into fancy or ostentatious display of wealth. I like old time cool. The clubhouse at the Cal Club has this kind of feeling. The men's locker room looks straight out of the 1920's. There are even little "lockers within the locker" inside each member's locker for stashing hooch during prohibition. Quite cool. I imagine the clubhouses and locker rooms at SFGC and CPC are similar.