You obviously made every region exactly 6 countries on purpose, perhaps you can expand on your reasons for that.
Personally I think the best maps have several different sized regions, especially small and medium regions since they give you several different options for what to go for when playing. Maps like Canada and Hong Kong only have 2 regions worth going for, and quite frankly those maps suck. You need a couple of regions with 4 countries giving 2-3 bonus, and a couple of regions with 8 countries giving 6-8 bonus.
As far as bonuses go, I don't think any region should ever give more in bonus than it has in countries. Maybe it's hard to defend in singles games, but in team games, especially triples, your teammates can help defend you and it becomes VERY imbalanced. Specifically The Beaches region is also on the edge of the map, the team that lucks into this side of the map will have a decided advantage. Any map this big will need to be good for team play first, singles second.
Don't get me wrong, the number of countries is fine. I count 12 regions with 6 countries each rather than 11 as you posted, making 72 instead of 66. The biggest problem I have with this is that the first person who goes gets 4 armies and is virtually assured to take a country, however the person he takes it from now only has 11 and will only get 3 armies. Going first is already enough of an advantage, 66 is the better number so everyone gets 3.
Just don't let these people talk you into making yet ANOTHER map with 48 countries, which is slightly too big for 4 people and slightly too small for 6. We've got way too many maps sized for 5 people already and most games are 4 or 6 players.
As far as the image dimensions, you need to do something about it. Small maps need to be 600 px wide and large maps 800 (it is actually required they do not exceed this), and the width needs to be noticeably larger than the height.
Visually, you should separate the red and green regions because it causes problems for color blind people. You have a lot of greens too, which is more of a problem on the bonus board than on the map. Stick in maybe an orange and a brown so that everything is nice and distinguishable. Also, consider making the blue region a slightly more distinguishable color from the purple region.
And the text in the bonus box needs to be bigger and thicker (to show the colors off better).
Those are the bigger things that I see. I hope the length of this is constructive rather than intimidating.