This is a good change. I've got many players who are listed as a PF but will only ever play SF, or vice versa. Or even better, SG who will be SF because they frankly are too slow to play any G position. This does make things a bit easier, which is nice.
Not to threadjack, but I'd also like to see the ability to edit your own Coaches Corner posts to eliminate double posting, bad typos that completely change what you meant, etc. I'd also like to save up to 5 recruiting filters. Because of potential, player roles is only useful to a point. I'm never going to take a 10 WE and 10 D player...so I'd like some filters to just eliminate those guys right off the bat.