If you don't mind I had a go cutting and pasting,
The main things I thought of are,
1) reduce the height superstructure compared to depth of hull
2) put radars where they will not fry crew or helicopters (other locations do exist see Nansen class etc)
3) cluttered assuming its a new ship (stealth will require less on deck if 2000+)
4) removed old type radars (really you should look at real ships and copy not what I have kept)
5) pick any other propeller (old SB joke)
good luck and keep trying new designs
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