Well, that was an improvement if I've seen one!
I much prefer what you've done with the troll race here, changing the high-tier units to create a stark difference between the trolls and other races. The troll bear riders serve very well as heavy-hitting units now, to make up for the lack of tauren in the race, whilst also adding an ensnare option to give the troll army something to make up for their lacking AA-focused units, as well as to make enemy retreats costly, and the green dragons add a nice and strong air unit to the ranks that allows one to do a lot more damage with the correct composition.
As for existing problems? there are a few - the largest one being that there appears to be a bug preventing the "Devour" ability from being usable for the green dragons.
A secondary bug is that the AI seems to ignore gold mines until you clear out the creeps there yourself, and as a result it's easy to push for a win late-game with what's basically total gold control over the tertiary gold mines in the middle of the map.
the only other nitpicks I have about the map is that the troll workers appear to use the human peasant death sound, which doesn't fit trolls very well, and that the tooltips do need some changes, as many are unaltered and are still using their original description as orc upgrades, buildings, or units, rather than fitting in with the troll variant