>>536539296
The point isn't that all sister ships have to look alike or even vaguely similar. There are a bunch of classes that don't follow that example, but the first 4 KGV sisters did keep with a pretty consistent design theme and color scheme, even though Howe was drawn by a different artist from the first three. A couple of them were actually pretty important in the game's early days, and Howe and DoY are still a couple of the best SSR BBs in the game.

Throwing Anson in the group as a loli with an entirely different color scheme and a gag/joke personality makes her stand out like a sore thumb amongst her sisters, and there was no real reason in the lore or in /his/ to make her this way. If she were Barham or Malaya, or if she had a red, black, and gold color scheme, people probably wouldn't care as much.