Heyo,
So developing and balancing new ships is an extremely timely process that requires many staff and departments work on them. While yes, the "B" ships are essentially clones of the originally existing ships, this does allow us to offer them at greatly reduced prices for the sales period. Just like in traditional retail, brands don't put out brand new models/products at heavily reduced prices for the shopping holiday.
When releasing new content such as ship designs, we do try and make them distinguishable from previous in game models, such as, we wouldn't want to release an Iowa clone called NJ just for the sake of having the NJ in game, we'd like to consider how to make her a new gameplay experience from the existing in game Iowa-class ships. We make it very clear that these are copies of the original ships at a reduced price with a new skin.
If you don't like them, you have no need to buy them :)
Fem,
If the camo was available alone then it would be of no value to players without the ship. This not much of a deal for a large portion of the players who do not own ships. As I explained above, there is merit in purchasing the "B" ships if you already have the standard versions. However, if they aren't worth it to you, then obviously there is no force being placed to purchase them.
Fem,