I have the Dreadnought for a long time now, I grinded it when it had just come out. I love that ship, both for its history and how it handles.
However, I simply cannot enjoy it.
I have not had ONE match in the last 10 without at least one carrier present. The Dreadnought has no AA, and when you get two CVs in a game (like the last one I played) they gang up on you and you are simply helpless. I tried staying close to other ships but at this low tier the AA is very short-ranged and they cannot cover other ships effectively.
My advice - do NOT get it, it will only bring you frustration.
I am truly sorry that I had to make this post, but I have had enough
All the best!