While I agree the Iron Lake leve needs adjusting, I have never failed the leve due to the Kobolds. I have however died three times on it due to the mobs which is a pain in the ass. I find patience is key with that, waiting for the mobs to move away. But sometimes they'll return before you finish the node.

The Treespeak leves I aim to do during night since the goblins spawn during day hours. If you happen to get to Treespeak when it's day time do the 3 points leve first. If you're mining then the goblin can affect both leves so you may have to check which camp the goblins are at before starting a leve and then do the other one. Just a quick "fix" until SE get round to changing them.