More of my map adjustments for discussion:
I mostly applied my previous plans for Italy:
I stuck to my solutions for Corsica and Sicily which were controversial at the time. I still think a diagonal connection that puts Corsica in Marseille's BFC is the best of the bad options. For Sicily, I wanted to allow a city there while still placing another wheat resource on the island, Sicily being one of the main food sources of the Roman Empire. I noticed that Bautos added a river near Naples, so I also decided to add the Arno near Florence. More rivers make Italy more prosperous and harder to invade which is both desirable. I also added a Wine in Apulia, simply because Italy only producing one wine seemed wrong. I decided to keep that additional Adriatic Sea tile (with the clam) that I previously wanted to make land, and also decided to keep the floodplains in the Po valley, but I'm not decided on either of the two.
Slight rearrangement of peaks and jungle in Vietnam:
I moved one peak 1W to make more room in the Red River delta (a candidate for grassland floodplains in my opinion, but didn't add anything yet), and also turned two rainforests south of the peaks into jungles. This makes Laos mostly impassable to armies so attacks from China/Vietnam into Thailand need to go through Cambodia, as previously requested. I also brought back a peak in South Vietnam simply because the space there allowed it.
Mediterranean islands:
Moved Crete 1S, made Cyprus a 2 tile island to bring it on par with similarly sized islands in the Mediterranean (also it helps Tyre), and turned Majorca into an island feature. It's debatable whether it deserves to be a one tile island but it's usually not worth the effort to improve. The terrain feature makes things easier.
Slight changes in Greece based on citis's suggestions:
Removed a land tile in Macedonia (probably meant to represent the Chalkidike) and adapted the river to it, then moved the Olympus to the right position. Moved iron up to Macedonia. Not sure how accurate that is, but it encourages settling Macedonia early which is desirable. Athens instead has Silver in its BFC. Historically, its silver mines were among the reasons for Athen's wealth and it supports Greece design as an early research oriented civ. It could disappear later in the game (late antiquity). I also put some Olives (hard to see, they're 1W of the Marble) to Greece proper because it felt wrong without it. Not sure if Crete then should also have Olives or rather another Wine resource. I also realise now that I removed the rivers separating the peninsula, but I think they should be in after all.
River related changes in Norway:
Had a request to move the 2 tile river 1W, but could not find any actual river that would be large enough to justify it at all. Instead, I think it is fair to represent some major fjords as rivers, not the least because it would be wrong if Norway of all places could not build hydro plants. So I added the Oslofjord, Sognefjord and Trondheimsfjord.
Mostly implemented Steb's suggestions for Quebec:
Slight river changes and switching some hills/flatlands.
Baltic Sea:
Aland is now an island feature, moved islands closer to Stockholm to represent the skärgard, moved the Fish south so northern Swedish cities will not benefit from it.