So, I was thinking, how would I play Rebuild against NV/Bridge? At first I thought three pile threat, but I'm not so sure about that. But then I had the next thought.
Super straightforward lalalalala Rebuild strategy:
Basically get as many rebuilds as possible as absolutely fast as you possibly can. Probably this means buying exclusively silvers and rebuilds, 1 terminal silver of choice on <5, maybe some sifters also on <5. Rebuild your estates first, if possible, then your 3 duchies into provinces. Then just keep doing the same thing, and when you have no non-province green in your deck (including if you have some non-provinces in your hand), just let province-> province happen. Oh, and obviously buy a province if you luck into the money and already have, I dunno, 3-ish Rebuilds.
That's it. Okay, maybe when you get to the point where you are pretty likely not to play any rebuild you buy, before game end, buy duchy. And possibly some time around when you get to your 3rd province up (maybe a little later), start buying estates on <5, only it's important here to always name estate.
Seriously, that's it. Basically, you ust trash the province pile up, and end the game fast, before your opponent can do anything.
I almost wonder if this works in the mirror. Let's check it out. Basically, you will end up with 3 provinces. The other guy, if they are playing as suggested in the article, will get 5 duchies, and try to turn them into provinces. If you trash 3 provinces, you need 3 estates to keep up with him. Probably, that's about where you will be. So that is the magic number. Which means you need to play rebuild, let's see, 9 times, before he plays it 6. Which... well, they BOUGHT 2 green cards, and you bought 2 rebuilds instead. Does this translate into you playing rebuild 4 more times than him? Hmm, I would guess no, usually not, but it would actually be reasonably close.
So this actually shows you something really important here, though. There is a point where going too much for the duchies might actually be overdoing it, if you end up with too few Rebuilds. I would guess the magic number is somewhere around 3. This also shows the potential of buying estate as green card #4. Now that will largely depend on how things fall, what money you have at what time, but there will be, I expect, this point where you hit 2 or 3 or 4, and there are maybe 2-4 duchies left, and you want to buy that estate, so that the $5 hands you do get, you can go for a rebuild. Because if you have more rebuilds than him and an even duchy split, I would think that you are in very good position.
Anyway, none of this is really tested, but it seems to make sense. Also, I do think that something like this is probably how you would want to play against mega-turn strategies. It's not about maximizing your points, it's about getting the game over as fast as you can, with a lead.