I still have dwarves that never figure out how to put parts of the uniform on in the right order. They end up running around without gauntlets and boots until I change their uniforms to exclude clothing, take the bad thought for being naked, and then allow the uniforms to have clothing again.
Do armor stands and weapon racks work for storage yet? I define barracks from items other than those two things because they were never used for storing stuff in older versions, and a barracks defined from a bed works the same way as one defined by a weapon rack. It's actually okay that they never worked: military dwarves can and should just carry their equipment all the time because trying to change it out is buggy and inefficient anyway. The whole "store the swords in the armory and have dwarves grab them for training or emergencies" system makes intuitive sense and feels good from a "roleplaying" perspective, so some new players are certain to try it. If they keep playing, they will eventually realize it's a pain to get to work right and isn't practical in emergencies since there's no penalty for a dwarf who just carries his weapons everywhere.
Then there're training weapons, which are actually harmful to use now that dwarves can get attached to items and sparring is pretty much totally safe.
Ammo is still buggy and inefficient. Bolts are available in the thousands and the one squad has 500 bolts reserved, with none reserved for hunters. I still have marksdwarves that don't shoot bolts reliably because they're on the ground in the stockpile rather than in their quivers.
The military is actually pretty reliable in these versions. But the UI is still clunky, dwarves still don't always equip properly, and new players aren't going to understand why things don't just work right. Sure, there are workarounds and other ways to do the things that need to be done to have a functional military. But it doesn't help the game's image to have obtuse or broken things running around in a system of such critical importance to a fort. Things like this are why people dismiss the game as buggy or unstable.
I guess my thing is that I don't care so much about all the old timers who are used to the DF way of doing things. I want DF to have a future, and so I want new players to be able to understand the way the game works, too.