You got this awesome artwork, all those models done to the umpteenth degree...
and honestly if there was a "Hardcore" version of WOWS that was entirely by the numbers historically as dead on as ya'll can make it, well, ya know, it might, ya know, shut a buncha people up!.. no commander skills, modules and add ons. No options no player picking mods. Players earn ship up grades.. and some ships don't have up grades. If it didn't exist historically, it wont be there. And everyone starts in DD's.. Getting ones self into a BB will be a bit of a long process..
There's a handful of hard core navel sims out there..including some die hard's running heavily modded version of Great Naval Battles 5, Jutland and Distant Guns, Ironclads, Victorian Admirals, and a few other titles...I'm only familiar with the ones available in the US market.
As far as I know the best worlds ww-II ship combat sim might not even be available in the US!
But on the side, just a spare time project a World of Warships Hard Core mode. Let folks play it for free, keep it upgraded as needed, and when players go on and on about play balance in the main game, reward them with a weeks worth of premium time in the hard core game..