The game can't progress (or, some would prefer change) cause it might poorly effect some players. Fair enough. I don't think it makes BB any better for the future, but that's just me.
Based on that, I think it's ironic that some of those taking this opinion are telling others to adapt.
I'm telling people to adapt, even though I've already trained a good SF and I"m training another SG to be SF. I think my experience doing is why I'm advocating for a way to more effectively train a SF like other positions can be trained, because even though my team will be helped less relative to other teams, I just see this as the right thing to do for the game. It's not like this is such a radical departure from the way things are now. In fact, I actually see this as a rather minor change being proposed. Why all the fuss? If the developers see this little tweak in the training, by letting teams train only SF (or only wingmen or forwards) for some already existing training skills, let's just decide it should be done. I would venture to say that if this change happened, most teams that aren't reading this thread wouldn't even notice the change, and those that did would probably be like, hey! that will help me strategize with my training better and gee! that sure helps me train the way I really want to train. In less than a season, we'll all have forgotten what it was like when we couldn't train SFs by themselves for anything, with only SGs for just one skill.
Don't ask what sort of Chunks they are, you probably don't want to know. Blowing Chunks since Season 4!