You've definitely improved in creating melee-maps, although there are still a few flaws.
One thing you must pay attention to are the drops.
A level 8 item for a level 10 creep camp is way too good, you should heavily decrease that drop (level 8 items are the best items... you don't give them to a creep camp that's barely even orange).
You haven't got a single charged item in the map, it's all permanent, permanent, permanent and occasionally a tome.
Too much permanent items are really
not good, there's a max amount of slots and charged items can be a great advantage in battles.
The terrain is a great improvement (you can thank Wanza for that
) and since it's symmetrical, there's no balancing problem.
The only thing I suggest is that you make all corners like the upper right one, since in all other corners the creeps are too close to each other.