Well here's what i've done so far. Refit Century designed for combat. Pretty much the entire hull is covered in ablative armour (similar to the type from Endgame) but always fixed to the hull, not deployable. Much more sinister looking than the normal Century. Also has 5 impulse engines but I may swap the 2 on the nacelles for phaser arrays or torpedo tubes. This ship is from around the same time as Endgame took place. I may also release this as a S31 combat vessel with cloaking device, different weapons etc.
I've contacted DJ for permission to release her when she's done and i'm waiting for a reply.
She still needs quite a bit of work though.