So, I have been complaining so much about elemental aspects of this expansion, I gigured it was time to give a bit of praise for a change - before I start sounding too much like a grumpy old man who hates everything:
I like how Agora is now a mix of Money enabler and engine component. I wonder if it would be better being able to discard just any card (possibly still only giving the bonus for Silver) to combo with itself. But perhaps the card as it is on Imgur is nicer, as it's less obvious.
Aquifier feels like it could screw you over a bit, so I'm curious whether it actually is worth 4$. Maybe it needs a steeper base bonus? Apart from that, it's a neat idea.
I wonder whether Archeologist is really worth 7$. It only cycles two more cards than Hunting Grounds, but also draws one less. Catacombs is another obvious comparison. Unlike either of those, it also does nothing when trashed for benefit. I also assume that usually you'll discard the two cards you don't put in your hand, either way, so maybe this could be a 6$? I like how straightforward it is.
I like Collector's friendly interaction, and how it subtly sets up its main effect. This effect is annoying in multiples, so putting it on a terminal is the right thing to do.
Encroach reminds me of something I tried to do back in the day, with a card called Vizier. It did the opposite, though, discarding a Victory card to gain a Treasure card costing up to 1$ more. Maybe I should revive that. I like how Encroach has a fixed draw, to make the card a bit more interesting.
New Gamepiece seems like a cute mini-Venture.
Inspector first had me worry that you would sometimes discard good cards to spite your opponents, but then find they didn't have such cards in hand. Then I realized that, as the cards go onto their deck, you usually want to discard junk to this, either way. With that in mind, It's actually a clever concept. I like it!
I like Pharaoh's theme, but isn't it too late usually when you get it? I assume that if you get a really early spike (as e.g. Coppersmith or Death Cart provide), then it's brilliant, but apart from that it seems like it'd be a bit late to the party. I'm not usually a fan of split piles, but maybe you could have this be one, with the first half being something similar to Death Cart / Mining Village? You don't need 10 Pharaohs, either way.
I already talked about the under-the-line effect of Profiteer and why I'd remove it, but the effect you get on play is actually not a bad idea at all
The parentheses, though
Profitee... Erm, Inspect... erm... Pro-spector. Ah, yes. That's my Vizier, except that I think my version topdecked it. I killed it a while ago, because it made getting Provinces early incredibly good, but perhaps I should have just lost the top-decking, like this one. It also costed 3$, by the way. The fact that you have those 3 cards with such similar names really confuses me, though. I'll add that I'm not a native English speaker, but also two of the guys start with P and wear identical hats... They actually look like the same guy with a sliiightly different beard. But I already mentioned that. Anyhow, looks not too bad.
I think Shipwreck is nice, but I suggest you just make it a 3$ and always give that on-gain bonus.
I kind of like Stoneworks, but isn't it a bit too good at preserving the VP from Victory cards?