It is projected to be 2.7km long, about 500 meters longer than the Galactic Civil War-era Secutor. Die Mandator-Klasse wurde rund 20 Jahre vor den Klonkriegen Bellator Class Star Dreadnought. I think this would be a perfect replacement for the Mandalorian Order's fleet of Vanguard-class Star Destroyers which are currently being used as mainstay carriers. None of those are better or worse imo, just conscious tradeoffs to achive specific goals. This is probably going to be officially known as Secutor II-class Star Destroyer. Executors are supposed to be relatively brittle for their size. There are sacrifices made to achive all of this. Adding to this is massive fighter/ground forces complement to provide fighter support to the force its a part of, and forgoing the need to take transports for each inconviniently shielded rebel ground base one could come across. Also, its fast, in the ballpark of its prey. As such, Executor armament promarily consist of destroyer-sized weaponry (I imagine calibers 40 to 720 teratons though later Im not sure with and I have zero evidence to support any claim like this) with shields to match those kind of threats. Specifically its the lack of opponent to go head to head but plenty smaller, nimbler targets, both from the Rebels and local power deemed insufficiently loyal (assuming the Home One is an absolute peak of what ARR could get their hand on). M3 should come out on top more often than not but it designed first an foremost with peer opponent in mind, while Executor is tailored to the environment the Empire found itself in sometime after the CIS Holdouts were liquidated. Either way, there’s a certain divergence between roles of these two ships. There was an Executor named Brawl, if memory serves. The Bellator-class Star Battlecruiser, also known as the Bellator-class Star Destroyer, Bellator-class Super Star Destroyer, and the Bellator-class Star Carrier was the largest and most powerful mass production starship class produced by the Mikaru Shipwrights and fielded by the Free Echani Alliance.It was based off designs of the Imperial-class Super Star Destroyer which the Empire was.

Mandator class star destroyer