The new Ancient Forest graphic is almost indistinguishable from a distance from regular Forest. To someone like me who is red-green color blind, they both look brown (which is appropriate, because evergreens always look brown to me in real life). Unfortunately, they are the exact same shade of brown. The old graphic was a lighter shade of green that actually looked green to my eyes, and it was easy to distinguish the two from a distance. With the current Ancient Forest graphics, I have to pull in and look closely to see the difference. The trees look different, but not different enough for ease of use.
I would suggest keeping the new graphics, since they were obviously made with a lot of work. But I would suggest altering the shade either lighter or darker (I prefer lighter, so that they look green to my palette).
Also, big kudos on getting the unique terrain features labeled. Besides the new rebase and recon mission buttons for the hawks, those are my favorite cosmetic changes.
Edit: thank you for the Civilopedia entries on the Ring of Carcer, Remnants of Patria, etc. in the civilopedia, so new users aren't in the dark about what they do. I had to do a lot of web digging to figure some of them out in the past. I'm sure there are plans to put in links (for example, the Broken Sepulcre should say "Spawns Barbados (link). Grants death mana (link)." In the description below, the word "any" needs to be inserted: "...and will attack [any] who wander close."