Probably the Harpoon 3 with all those "silly rings" is a lot closer to the reality of an Aegis system. However I do agree with you although Harpoon plays well & is a very deep experience the way it is a 3D visualization would be nice. And yes it definitely needs a new UI. Did you see the canceled Harpoon 4 which Ubi was working on there's some old reference to it at
combatsim.com It was very close to being released when canceled.
Take a look at
The Red Pill or
Global Conflict Blue for modern indie versions of Harpoon