No way... That's the nature of trees; they should have an "imperfect ratio." At least, I think a symmetrical tree is the ugliest kind of tree; it's not a lamppost, after all. By the way, the beauty of trees lies in their asymmetry. But that's if we're talking about the trees we encounter every day. Ents are something in between a humanoid and a tree; in my opinion, both options are generally worthy of each other, but I still see ents as 5-meter-tall giants, incredibly powerful, but incredibly slow.