FT-Uber BB`s?

I was thinking about my ideas for turrets on battleships I posted, and want to
ask a question to you gamers. What modifications would you consider nesasery
to the phalons multi layered hull armour would be nessasery to allow a human
ship to use them? I`m asking because I could see a turreted ship, with a multi
layered armour and large caliber K guns as being rather overpowered (and
expensive), and as close to being a uber ship as is posible, while reusing
exsiting rules (and the minor change for turrets). It would also recreate the
dreadnought era warships very easily for a space
game (RN Vs KM/WW1 navies anybody?).