You know it may not be as bad as you guys may think. Keep in mind that at its core, SH4 is still very much a uboat game since its derived from Sh3. Fleet boats work entirely different from uboats on many levels so with sh4, what you had was a uboat game, that was shoehorned to fit into a fleet boat paradigm. Of course its not going to work out all that great.
With the uboat mission addon, you had uboats being shoehorned back into the mix, which had already been cobbled around a paradigm it wasn't originally designed for. Again, of course its not going to work out all that great.
If i was a betting man, id wager that the SH4 engine being used, is a patched/fixed version of Sh4 1.4 with the changes for fleetboats peeled back and culled to remove that layer of abstraction that didn't work so well. And really, aside from bug fixes added in 1.5, theres only four or so issues off the top of my head that would have to be resolved to have a rock solid platform. The dev's have had plenty of time since the uboat mission addon to fix those issues, and i would think they'd have to done that first before trying to add anything else.
Besides that, uboats with improved eyecandy with full interactive and rendered interior? The majority here will eat that up and ask for more regardless of release state
