I love this. I downloaded it to try it out. It seems to clash with Bailknight's Graphical MOD and the Real Capital Ships MOD. So it kept crashing. I tried it by itself and loved the bigger ships, there are a few issues though. When the capital ships warp, the warp hole forms at the middle inside of the ship.
So far I think frigates and all other ships below that are fine in size, but I think cruisers should be the size of the current capital ships and capital ships should be as large as you put them in your mod.
I really hope this takes off, or one of the bigger modders helps you with this, if this kicks off, my Sins of a Solar Empire Experience will almost be complete.