Increase Oak Tree Size

I feel that Oak forests are unnecessarily dense and packed, they can be hard to move around in, and the trees are only a couple meters high. I feel that Oak tree (and probably other tree) generation should be redone, to get more unique, taller trees. This would make each world more unique, especially if each tree was more random, and not just one of a set number of designs (although for some tree types, like those tall spruce one, I do think that this is fine). In real life, the average height of an Oak tree is 30 meters, I think, so I think they should at least be half that height in Minecraft. Also, I feel that besides the awesome new mountains, Minecraft's terrain generation on the surface is pretty flat, and so making all trees a little bigger I think would be an improvement.