I would like to propose af Chapmans Bellona class frigate as a DLC. It’s a fast frigate with 24 pounders, and would fill a gap in the DLC-ship tree. The most famous of the Bellona class frigate, which saw service in the Swedish, Russian and Naples navy. The ships have been suggested earlier in the player ship poll, and has a thread in the shipwright forum:
https://forum.game-labs.net/topic/5620-venus-frigate-by-chapman-with-plans/?tab=comments#comment-107296