Alrighty the first map is really good but down the bottom were the straight line of trees isnt great you should use a variety of trees so that the sizes vary so it doesnt look so straight and robotic so for the moment 7.5/10
The second map is also good but lacks playability as there is no dead ends that will frustrate the player the way you have made it means that the player can get through the map by walking in any direction and also you hardly ever see singular trees in a forrest so add more trees and create dead ends to make it difficult for the player so 7/10
sorry if it sounds harsh but its just the way i see it :(
The third map look at the middle were you have bunched trees together making it difficult for the player to get thru thats what thed whole map should be like i said with the last one make it difficult so 7.5/10
The last one i like apart from the border and mabee make the trees in the middle more bunched together to make a path for the player and not just a straight walk thru as for the border youv done it like the origanal pokemon games straight and boxy look up natural mapping guides as they will teach you randomise trees on the border and in the middle so 7.5/10
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Right il look up a natural mapping guide for you :)
This is a working progress but the general idea can be seen in this map this would be the join from a grass rout heading up to a legendary city of stone were you could find the rock gym leader i hope you like the idea its for your hack and remember its a working progress :)
https://a.imageshack.us/img24/3088/rockandgrass.png
If you look at the right hand border thats what all the border in the grass area will look like :)
