For the subjective opinion, I believe there is a converging upper bound, if I may call it that way. For example: If you have a set of fixed parameters and you have to tweak only *one* parameter, you will decide for one value that you like most (or in rare cases where you decide for parallel outcomes which have all their own reasons to be presented). However, in general it is ofc impossible to precise perfection on an immeasurable large set of endless variations.
Wow, just wow Nice 'tree', looks more like some kind of cybernetic citadel to me, the almost random growths feel like they were designed for that pattern its so alien I love how massive it feels, the size of the tree and the depth and extent of the background makes it look immense I'm almost reminded of Escher as from the almost road like structures to the left and right of the tree going up the walls and how one wall fades into a blue abyss, confuses up and down to no end
This reminds me of concepts for tubular "worldships", with buildings along the edges and then parks with trees and other plants near the center. If I didn't know better, I'd think this was one such concept. Great job.