I think its a good start to the improvements, but more still needs to be done. The sludge river is nice, especially now that players can be knocked in. It adds an extra challenge to the map. The slabs also really smoothed the map out and made it feel more natural! EPICMATT88 also touched on a few points that I agree with after looking more closely at the map.
I agree with pretty much everything said in that quote. The stone brick stairs contrast with the white clay and just add a clunky look to the tubes. The smoke dome is odd. The red theme almost reminds me of mars, which with the black border is a bit of a stark contrast.The toxic tubes look clunky and odd, in the updated version of the map; the small stack of smoke looks odd going up to the dome of it, and imo I would completely use a different block scheme for the ground and the hills. (I would make the ground brown colors and make the hills a dull gray) Because as of right now I think that is the biggest flaw of the map; the orange and black don't look that great together, it's a huge contrast in color and brightness.