I love the gorgeous new forests formed by the """new""" multi-tile trees (which I now realize is likely 6 years old!), but there's an issue with the forest biodiversity. Like 80% of the trees detailed in game are fruit-bearing, and the distribution appears to be mostly random, meaning that every forested biome is effectively the Garden of Eden, a towering orchard of absurd plenty. With no effort you can feed a fort of arbitrary size simply by picking food that, quite literally, grows on trees.
There are some downsides to the system--namely the exposure to deadly nature, and also the tendency of dwarves to swipe ladders out from under their coworkers and strand them in trees to starve--but these are managed easily enough and pale in comparison to the upside of "limitless food". But I'm less bothered about the gameplay limitations as I am about verisimilitude--many of these trees are domestic, and even for those that are not, wild trees that bear human (or dwarf)-palatable food are not the majority in any biome.
Barring a classic Bay12 solution involving the wholesale implementation of modern dendrology, I'd like to tag specific trees as more or less common. Oaks, maples and pines should not be vastly outnumbered by apples, persimmons and pomegranates! It should take time and effort to cultivate a flourishing orchard.