Well I've discussed your map in depth with a friend, and these are the changes we would suggest:
The Swamps: This one is actually good, although you might consider moving the Mitchell/Saddle border slightly over to the right to make it clear Saddle does not border Biboorah. Keep the bonus of +3.
The Beaches: Since it only has 2 defense points, we think you should remove one of the islands to make it 7 territories instead of 8 (this will be added back further down to keep it 60 territories total), changing the bonus to +3.
City Estates: Add a connection between Fitzroy and Yarrabah, reduce the bonus to +2 since it only has 5 territories and 2 defense points.
Sugarland: The problem we had with this is that the person who takes Bananaland will be able to take this and go straight north without increasing their defense points. To combat this, we think you should add another island just south of Franklin, connected to Franklin and Eubanangle. Also add a connection between Franklin and Gordonvale, thus removing the bottleneck from the region. Increase the bonus to +5.
Bananaland: Make Palmerston part of Dairy Farmers, which reduces the territories to 5 and the borders to 2, and reduce the bonus to +2.
Fruit Pickers: Connect the mountains to cut off the connection to Dimbulah, reducing the borders to 4. Bonus of +6 is now good.
Agate Hills: Since it now only has 2 defense points, reduce the bonus to +2.
Maize Silos: The region is fine, but with 4 borders it should only be worth +5 bonus.
Dairy Farmers: With Palmerston added it now has 7 territories and 5 borders to 4 different regions, so increase the bonus to +7.
Rainforest: While it technically has 4 defense points, it only has 5 territories and can take Tinaroo to reduce borders to 3, so the bonus should be +4.
The color looks much better, too. Very nice.