Odd question but I think it’s fun to think about. I’m not super up to date on Trek lore but I feel like there’d be a big divide between Odium devotees and those who think he’d be dishonorable. Some Odium upped Klingons would be pretty terrifying. Can you imagine a Klingon on red mist? Fuck me that’d be scary since they pretty much already have a built in red mist.
Definitely not. An army of highly skilled warriors whose greatest desire is to die valorously in battle hopped up on pure passion/rage. You’d need some high grade weaponry to stop them.