I'm rather opposed to doing that. I use to do volunteer work in a zoo. With the primate house they don't just put out a bowl with food in it. It's spread out in the bedding, they have to search for it, i.e. forage. It helps keep them entertained. Same basic idea here. Yeah, it's more difficult with the foliage, but that's the idea. If you want easy to spot nodes be a miner or a woodchuck. The biggest part to me though is I don't really want to play the game with the foliage turned off. It looks so much better with it.

I would rather use something like EsoHead Markers. Starting a new zone I'm wandering around lost gathering nodes. It helps show me where I've been and haven't been yet. It helps me find nirvana, that spot where nodes seemed to be everywhere. It doesn't actually do anything for me while gathering.