My feeling is that Deadeye is really the problem. It entirely changes the way ordnance works, in a way that wasn't a problem when ordnance was inefficient. Now that ordnance is a fairly good investment, Deadeye is sort of the gold-standard for shooting torpedoes: you don't have to worry much about positioning or overkill. You get to defer all or most of your decision-making from Activation phase to Combat phase, and thats a huge advantage.
Probably. Making deadeye unique would solve the problem of a whole list of reactive ordnance carriers while still allowing you to bring one. LRS aren't going to be as powerful, as they require commitment and have a notable drawback.
Let's do a little thought exercise: if Deadeye is unique, in what capacity do you see ordnance still useful?