Small Dark and Pale Oak Trees

I am not sure if it is too late to add this possibility, but I have always wondered why there are no small versions of Dark Oak trees, and now the Pale Oak mirrors this.

Actually, there is one place where a small Dark Oak tree does generate, and it is in one of the Woodland Mansion rooms, proving that it is actually possible to grow in the game world/lore.

These don't have to actually generate in their respective forests, but if they did, I think that would bring a bit more variety to the biomes. Perhaps small Dark Oak trees could sparsely generate around regular forests, similar albeit maybe a bit more rarer than Birch trees. Although this most likely shouldn't be the case because the Dark Oak seems to favor its own humid environment.

There could also be a 2x2 regular Oak tree that would be able to be grown, however with the existence of the giant Oak already I don't think this should be a vanilla feature.