Definitely helpful. I hadn't considered the effect more balanced skills would have on salary. It had occurred to me, though, that more balanced players might be more valuable on the TL, which is part of the reason why I've been looking through the TL for some guys under 6'4" with solid ratings in JS, JR and OD, but weaker ratings in PA, DR, and HN. My team spawned with a 18 yo with ratings along these lines, and because of that, I thought finding similar players and giving them an intensive schedule of mostly Passing training to even out their skills would add a decent amount of value to them.
I'm really just cloudy on what level of PA, DR, and HN are 'enough' for my purposes. My first instinct was to go to respectable, but I'm not sure if I want to spend the entire season training Passing, which is what I would have to do according to the excellent Training Simulator.