Should be changed all the way from Pop Warner up to college. Shouldn't be declared down until you're touched.
Biggest rule change I'd like to see is the bogus 15 yard pass interference call.....that one should DEFINITELY be mirrored after the NFL where if you commit a PI that prevents a 50 yard catch, the ball is placed at the spot of the foul and gives the offense the 50 yards. The defense should never be rewarded for subpar play, which IMO is what it does when you take away a 60 yard pass and only give 15 yards. Rules like that were created to bridge the gap between your burners and the kids that are not quite as fast.