The map has a lot of potential, an 8 player map has a lot of value it self.
I like the effort you put in the cliff use.
A) Red and yellow expands to no trees expandings, blue and pink expands to mines with trees. Thats a big no. Trees are needed for many things, harvest, owl scouting, keeper of the grove summoning treants, NE buildings free heal by eathing trees, mountain gigants wooden club skill.
B) block paths with trees is not a good idea either, some heroes can take them down with spells some others dont. paths should not be blocked for players.
C)Those expo are imposible to avoid peon killing, you can reach from behind and from the side. the bases, is ideal to have more or less trees behind the mine.
D) Agresive creeps in paths, players use peons / workers/ wisp, to scout, if you are attaked, the scouting is aborted. Also agresive creeps is considered something not good for melee in general.
E) trees simetry. In melee, mirrow the wood is like a must. No simetry = to unbalance: like no-equal base shape, no equal wood in base,
Minor differences of 1-5 trees are acepted, but the no-equal tree simetry is easy to detect here.
F) Small paths for a 8 player map,
Overall is a nice map, I like it,