About the map: It took around 12 hours to make and I was the only builder involved. It was built on a private server of mine using the plugins WorldEdit and VoxelSniper.
The ore spawns should be normal, a few diamonds, a few chests, an enchantment table. The roots are laced with a few half blocks here an there for a little difficulty getting to the center.

Please tell me anything that I can do to possibly make it even better, or give me ideas for a new map!
(i've been thinking about a netherfortress type of map, what do you think? Or even an "Aether" map)

Update 02/05/2017: I thickened some of the roots and thinned some parts to make it flow a lot better.