Having a cap means on the contrary that you limit your fleet comp to that number of officers in frigates and the rest in other ships. I don't see that as a desirable incentive either. Besides, the skill would feel just as wasted if you had a frigate fleet with 7 or 8 officers and the bonus was capped at 5.
Fair enough. I guess I just don't really see how this is true. Personally, I'd feel worse as a player if I felt I had to put all of my officers in frigates to get the most bonus rather than
not getting additional bonus past a certain number of officers. I don't think I would feel discouraged from putting additional officers in frigates after the cap was met since their skills are still relevant and it wouldn't
take anything away to do so. Conversely, not putting all 10 officers in frigates or destroyers (but really, frigates, because the original proposal indicates frigates have a higher bonus than destroyers) when taking Wolf Pack Tactics is actually taking something away.
That doesn't feel good to me.
I'm sure not all players would necessarily feel that way, but I'd be willing to bet it would come up. Just as saving the skill for Hyperions was the point of the suggestion in the first place.
Just generally, I don't think that having something artificial really matters one way or the other though. Tons of things in the game are artificial for a various number of reasons. What's more important is how the game feels despite those artificial limitations. I'm of the opinion that player constraints are very necessary to facilitate fun. So in this instance, the constraint is important simply because the absence of one would make me feel discouraged from not building my fleet around one skill.