From what I have seen, it would not make any sense for it to be a small gun. The concept in itself makes it so to have that much force it would have to be a very large piece of artillery to begin with. Beyond that, it makes anyone flying a long ship cry. I spent several games giggling as I made mobbys and junkers spin like tops. I think while it may be a niche gun, paired correctly it can make a very helpful and scary ship. So far I've seen the best use with it is on a galleon. While it's a pain when paired with a flak if whomever shooting doesn't wait for the flak first, it did rather well being we pushed the other ships about so much we could dominate the sky. I'd say the best pairing I tried so far was with the hwatcha. Between disable, push and heavy clip range it worked wonderfully as a disable side on the ship. Seen both good and bad examples on Spires, and to be honest it's rubbish on a goldfish from what I've seen so far.
One of its few weaknesses is that it has a decent reload time. If it were a smaller gun, people would put 3 on the side of a junker and chain spin, which would be insanely hard to counter at all. Pretty much a grief engine. Where as having it be a large gun makes people have to decide and choose if they want damage or not. While it can pick parts...there are other guns that do too and in my opinion, do it better. And too many Minotaurs means far far less damage to dish out on the ships that can have it.
I would say the arcs and range are rather silly. Its very smooth and very easy to learn compared to some of the other heavy guns. I agree it might do with some nerfing, perhaps on the range or arcs itself. For something that massive it should feel more like its that massive. Right now I feel it handles far too smoothly.
So far though, I find it an interesting and fun addition. I am curious to see what will become of it.