I put it in on Malajuri, off the coast of a small island. The map looks quite tropical, so I think this is the best fit.

Now in the atlas:

Looks good. Your varied mountain sizes came out quite nice. Not sure you're doing the map any favor with those number labels instead of proper labels though.

Would also be nice if you put a copy of your map in the post itself, so one doesn't have to click a link to see it. (And I know by experience that people keep cleaning up and removing things from image sites (Perhaps because a new version was uploaded), leaving the links dead)

Here are a few things I would like to see:

• Freshwater lakes, cold
• Subterranean lakes.
• More vessels, both sunken and floating (boats, ships, rafts, canoes)
• Various standard dungeon items encrusted with barnacles, like chests, barrels, ship hulls, weapons, etc)
• More undersea monsters (clams, eye of the deep, jellyfish, drowned ones, sahuagin, cats, kuo-toa, dragons)
• More traps, both those meant for undersea use, and those in sunken dungeons.
• More ship-based items, like cannons (and balls), ship's wheel, bundles of rope
• Modern/futuristic items (Ships, boats, cars, shopping carts, bikes and items. Sunken starships are great.)
• Some bare treasure piles. The ones from DD3 are full of sacks of coins, which looks weird underwater.
• Varicolor versions. would love to make a dark mermaid.

Not directly. I recommend drawing around the settlements with the tool, then placing individual trees after that along the edges to give a tighter fit (And finish off with a sort symbols in map to arrange them properly.)

There is also the exclusion commands, this allows you to specify areas to exclude, but this only work with polygons, not symbols.