Funnily enough, Sacrifice was the only card that hadn't been already spoiled, and was the one I wondered if it existed. As for spoiled cards, Four is Flatline is probably the best resource to gander at those.
As for the three of them, I'd say that Sacrifice is far and away the worst of the three. Sacrificing agenda points for BP removal is the worst thing I've heard since taking on BP itself, even if it does give you a small kick in the arm (1c per BP removed!) along with it. The only thing that might make it even kind of playable is the synergy with the Jemison ID. Even then it sits in the "extremely sketchy" part of my mental divisor.
Audacity is also not amazing, since it's basically just an ever-so-slightly better Shipment from Kaguya in terms of effect, but with a drastically worse cost, but it might be just this side of good enough. Pitching 3 cards from hand for 2 advancements is a pretty poor trade, but it's not a double event, so it does get you into FA range of 3/2s on its own, and with a secondary tool like Oberth or SanSan, it gets you your 4/2s as well. That'll probably make it see some play. This one is also just as good outside Jemison, since it doesn't require you to sac agendas, so it very well might see some Titan play.
Success is where the money at. This allows the crazy plays, like never-advancing a Government Takeover through saccing a 5/3, or pairing with a Biotic to do the same in 1 turn. Plus, you're not just placing advancement counters; you're actually advancing. This gives the Public agendas some lovin', and allows for fun Hollywood Renovation plays. Example: IAA a Hollywood Reno. Next turn, Biotic, place another Hollywood Reno down, and then play Success, killing off, say, a Project Atlas that you used to pull some of these cards. You place the 3 counters Jemison gives you from the Atlas sac and finish off the first Hollywood. Then use the advancements that Success gives you to overadvance it, using those free counters to advance the newly-Biotic'd Hollywood. Bam, you just jumped 4 points, and are not on either 6 points, or just won the game. Sure, there's less ridiculous plays out there, but those aren't as fun to talk about =P
The downside is that 2/3 of these are really only worth it in Jemison. Sacrifice is still probably not even worth it, and I sure as hell don't want to score a Hostile Takeover one turn and then just Sacrifice it the next just to get rid of the BP for a space-dollar. At this point I've spend 2 cards and 4 clicks to gain 6 money, which is generally going to be valued as lower than clicking for credits. Success is similarly bad outside of Jemijem, since if I sac a Project Atlas it lets me advance a card 3 times for 3 clicks, which lets me advance... a Project Atlas. I've now gone from 2 points to 2 points, instead of just spending those clicks to manually advance, putting me at 4. Maybe there will be some cool interaction in the future for it, but right now it's not a Weyland card, it's a Jemison card.