I swear the amount of "flood" or "brutes" that will show on this thread. To give you my answer thought, I was thinking to compare the Promethean to the covenant, the covenant has Grunts as the low guys, Jackels are slightly higher and can function as snipers or shield support, Elites are their medium level stuff, and Hunters are the big guys, but the Promethean have puppydogs for small, watchers as support, soldiers work as both snipers and the medium and knights are the big guys, however I feel like the Promethean are rather bland honestly warden and watchers is the only one that shows the technology that the forerunners held outside of weapons, they can emp, face laser, void bomb, make hardlight shields, repair armor on the spot. So I would want some type of Promethean that shows off more technology, elaborate enemies, like it could push spartans back and they couldn't get anywhere near them for a short time sort of like the guilty spark fight, or doing what Ghostbusters told them not to do and cross beams to make them stronger for big explosions (I saw that somewhere). Overall it would be like a glasscannon holding a ton of power but not much health also headshot protection.