Well this map looks a dab more appealing than it previously did. It's getting closer to finished, but I still have to say that it must go further. There is no rush to finish a map in a few days. Take longer on them and make them what they truly can be! That said,
---It's come quite a way from your original map. Kudos on that. But it still feels like a bland cereal box drawing. Give it textures and subtle tones of color change. Each country should feel like it's a country, rather than simply a plot of land. Even the water, Thailand, and China could benefit from some sort of texture.
---The text choice is alright, though it seems some countries are bolder, while others are thinner. Vientiane and Hua Phan for instance. Try to keep a consistency. Minor suggestion of making the Gulf of Tonkin larger, just so as not to confuse anyone that is is a country. Perhaps you can make it larger and more elaborate, same goes for South China Sea and the Gulf of Thailand, along with the Thaild and China. All of them could be larger and more eleaborate to improve the quality of the map.
---Legend is alright, could use a little sprucing up but I think it is currently the least of your worries.
---I cannot stand the continent of Laos. It has 7 borders, way too many. It's a 'Lost Continent'.
---Annam isn't any better, it has 6 countries, 5 of them borders. Also seems rather lost.
---Cambodia has 4 borders, it's doing slightly better than the rest.
---Tonkin is actually near balance, amazingly enough.
---Cochinchina has 3 borders and 3 countries, I think it could definitely use a knock down to 2 borders.
------Also...I still count 31 countries...bad number.
Many people have suggested some sort of impassable boundaries, and you have excluded them. Now maps can work without them, if they are well put together and generally balanced (I.E. Classic Map). I wholeheartedly must agree with them on this issue. Something must be done to make this map playable.
I suggest buckling down and working on this map some more. As I said, there isn't a need to rush a map through the process of quality control. It is a needed process and helps make maps better. I see a lot of potential in this map, but a lot of it has gone to waste currently.