Players like Ross or even Law, who was never really given a chance after a promising start, maybe if we had been a Championship side when he started he might have developed and received more opportunities?
I don't buy this argument. There are plenty of examples of players that we've shipped on to the lower leagues after virtually no opportunities that eventually rise back up. Sharp's a recent example, Mendonca's another - probably the best one is Kevin Davies. If they have the talent, they will show it in the lower leagues and progress upwards. Some players have early promise, but simply don't meet expectations. Plenty of those will end up as above-average League 1/2 players with reasonable careers - like Kevan Hurst or Nicky Law. Quite a few will continue to progress downwards until you have to do some intensive google searching to discover where they are now - like Tyrone Thompson, Colin Cryan, Ian Ross, Chris Bettney. And a whole host of other youngers that I can't even remember because, shock horror, they disappeared into obscurity.
NW used to get absolutely slaughtered for 'ignoring the youth' despite giving opportunities to Jags, Monty, Tonge, Law, Stephen Quinn, Forte, Doane. A lot of people seem to think that Naughton's emergence under Blackwell was unintentional, as he only got his opportunity when Sun Jihai was sent off - but he'd been in and around the first-team squad for a while without making his debut, and had Sun's sending off not happened Naughton would have had his opportunity sooner rather than later. Had Naysmith not been injured at the end of 08-09, Walker probably would not have made his way into the team at the time he did - that might simply have delayed his emergence to the next season, as he was clearly highly-rated by the coaching staff.
There is an element of good fortune to the time that these players emerge, but not in my opinion to them emerging - it would have happened at some point. Someone like McFadzean might potentially be the next Stephen Quinn. Then again, he might be the next John Reed. Danny Wilson sees these players regularly - and I trust him to be able to judge whether a player is ready to come in at the expensive of an established first-team player.