Hello new melee mapper!
It's always nice to see new people in the melee mapping section. Unfortunately, melee maps have a large amount of "traps" in the details that one needs to be aware of, and you have been caught by a few of them
The following issues are outright bugs that need to be changed:
1. Heroes bought at the tavern can become stuck on the left side of the tavern. Check pathing with "p" and ctrl-"d". In general, as
@Zucth has pointed out, there should be not gaps between trees and other doodads. Place trees exclusively with the size 2 circular tool, single clicks so taht new trees align perfectly with existing trees, no holding mouse key and dragging.
2. Creeps that are not guarding gold mines should be set to "camp" in the unit properties.
3. Do not have item drops chances other thatn exactly 100%.
4. One (or more) of the starting positions is placed too close to the gold mine. This will cause the map to not be considered "melee" by the editor, as indicated by "Melee map: No" (the mouseover text of this also shows if there are other reasons) in the bottom right of the editor. As a consquence, the map will always be played on patch 1.07 balance.
More issues that are strongly adived to be fixed/changed:
5. No landbased critters atm.
6. Itemdrops should always follow the "random level X item of class Y" formula. Dont use exactly specified itemdrops, and also dont use itemdrops of unspecified class.
7. The strength of itemdrops should be correlated to the strength of the creepcamp dropping. look at ladder maps as a guideline. For example, a lvl 12 camp (the 3 lvl 4 assassins at the goldmines) should drop something stronger than just a lvl 2 powerup.
8. Strong global weather effects are often considered to be too distracting. Maybe use light snow globally, and add heavier snowfall only in some locations via regions.
9. For 3v3, the amount of creepcamps seems to be relatively low.
Some positives are that the creep camps themselves are good, the layout of the map too, and visually the map looks fine. I also like the varying amount of gold in the mines.
But still, the bugs must be fixed, and some of the other stuff should also be addressed. Map set to Awaiting
Update.