Here's my current draft ("small" version). The thicker borders represent uncrossable mountains.

For continent bonuses, I'm currently thinking something like:
Counterweight Continent (gold): 3
XXXX (red): 2
Oceana (cyan): 2
Ramtops & Hub (blue): 4
Unnamed Continent (green): 4
Klatch (pink/purple): 6
I'm wondering if maybe the Unnamed Continent should be 5, though. It doesn't have that many countries, but it looks like it might be somewhat difficult to hold (and it happens to have Ankh-Morpork in it, which seems like it should be worth something).
Also, I'm a little worried that the image is a little bit tall. I'm not sure how much I can do about that, though, since scaling it down much more would make it difficult to read.