Meat/Hide Size and Animal Size
I fully admit this is a very minor issue, but it's one I've been interacting with a lot since playing an herbalist with the new recipes out.
There's times where recipes call specifically for Big Meat, so you need to go out and kill things that drop Big Meat. Now, you'd probably think a "Massive Grizzly" would do so, because it's explicitly "massive", but nope! Medium Meat. Mountain Grizzlies, however, drop Big Meat. Another example: Tigers drop Big Meat. You'd assume that Dire Tigers, which are explicitly in lore larger than normal tigers and also have larger models in-game, would also drop Big Meat (maybe even a big and a medium) but nope! Just medium. There doesn't seem to be much of a consistent pattern here.
As much as I would love Big Meat to be easier to obtain, the ratio of availability is probably about right (at least for the surface, I have ZERO knowledge of what this looks like in the UD), but it's frustrating when you're trying to specifically hunt for "large game" and the game that looks large (both in terms of size on screen and in terms of creature name) isn't actually large enough to get you Big Meat, but something smaller is.