Going back to my list of initial wonders, let me look at CEP's work:
I'm just going to make the blanket statement that I think we should keep vanilla's policy unlock for now, I don't think every wonder needs one.
Bananaue Rice Terraces: Is this a CEP special or a DLC addition? If its CEP I don't see the need for it. The hanging gardens gives food at the base, and 6 is already pretty good, I think 8 is a bit nuts
Great Library: Looks like it is unchanged otherwise that I can tell...or maybe it doesn't have the +3 science anymore?
Hanging Garden: I don't think this needs to change wholesale, probably just a slight nerfing..aka +5 food instead of +6 or something of that note.
Oracle: This one looks good, just a slight buff from the base version which looks good to me.
Parthenon: I don't think a slight culture buff will do the job on this one. Right now if I am going hardcore tourism I get it, else I don't...too many other things to spend hammers on. Either it gives a free building (making the hammers more worth it) or it gives a more solid push elsewhere.
Great Wall: Maybe its useful in MP, but the ability is just too lame for me to consider. Considering that walls are actually decent now for happiness control, what if the wonder provided a free walls in every city you have...AND never expired?
Pyramid: This is looking better, another possibility would be an engineer specialist...makes thematic sense and would be a very nice benefit that early in the game...since you can't normally get them until workshops.
Another idea would be like petra, it gets a bonus later in the game representing its one of the wonders still around in the base game.
Terracota_Army: Still seems pretty weak, perhaps it could use a free unit or something so that the hammer cost is discounted?
Statue of Zeus: No comment, I never get this wonder in base so I can't speak to it.
Temple of Artemis: Can someone tell me what the base wonder does (I don't have that DLC) so I know what to compare it to?
Stonehenge: This is a nerf overall imo. The 20 instant faith sounds nice, but at +3/faith vs +5 from the base that is only 10 turns...and then vanilla is better for the rest of time. I like stonehenge but I don't consider it a must have. An option also would be providing a free shrine to cut down the cost a bit.
Great Lighthouse: I think the change is nice...though I don't think it changes the wonder balance. Again, I like the vanilla GL there are just too many other wonders to consider. I will build it on water maps, not any other time.
What if it also provided some free work boats? Those are always a hammer drain early game, so I would be eager to build a wonder to recoup those costs?
Collossus: If gold becomes more valuable this wonder may balance itself. Right now, +5 or +10 gold doesn't change its value to me...but I consider a medium wonder in the vanilla that I do pick up sometimes.