Some further thoughts taken from a convo I had on the Subsim discord:
I've run in to a lot of graphical anomalies and bugs. It has potential and I think will be a good game with some patches and time.
In terms of complexity as it currently stands, I would say less complex than Crash Dive 2 (which is great fun).No TDC for example and you can't say see your torpedo wake yet (coming soon) which is kind of a strange one for me.
For targeting right now, you put a ship in your binoculars until the yellow turns green and just fire away. As far as I can tell there really is no aiming of any sort.
I've reported some bugs but have not had time to talk with the devs on their vision for the future. This is what is on the steam page currently in terms of what to expect:
