[The General]

Volumetric fog: a nice idea in theory, that doesn't work that great in practice. See-through crew members is an unacceptable by-product.

Ship-sinking times: way too quick in stock 1.3.

Finishing touches: The periscopes going up and down has been removed in 1.3. I always wanted them to go up and down when clicked in the virtual world. I also wanted the T.D.T. accessible by clicking. It's much less 'slick' a design to have to find an ugly icon on the bottom of the screen and click that. In summation; making the 3D world more interactive by having various switches and levers accessible. Time-consuming for the DEVS maybe, but I definitely wanna see this in SH5. You could almost illiminate the need for any H.U.D. and thus make the sim more immmersive.

Overall, 1.3 SH4 is lookng great! The modding community will add more and more interesting elements to the game making playing enjoyable for months to come.