DP-US and DP-Canada both have a smooth-read facility, with instructions on how report problems.
Below describes how one might get started doing smooth reading if anyone cares to see in part what the problem might be: http://www.pgdp.net/wiki/Smooth-reading_FAQ If there were a tie-in between PG and DP to let people in general know when SR is happening DP might get more SRs. A list of books "on deck" if you will and how to get them.
Allowing the hoi polloi, as it were, to "fix bugs" is a sure-fire way of introducing errors. I occasionally have to disallow an errata-reported error because the reporter wasn't aware that a word was, in fact, valid. For example, "ancle" is a valid, albeit archaic, variant of "ankle", and is not an error. But, if it's a typo/scanno for "uncle", it is. I've also handled reported errors where the error was real, but the suggested correction was incorrect.
This would be a problem that DP already has because in my experience many a P3 "knows" so well how to do their job that they never bother to double-check what it is the author actually wrote or that which the publisher actually published -- which in practice turns them into gold plated SRs. Don't get me wrong, DP has many excellent dedicated people at all levels, including all levels of P1, P2, P3 -- its just that moving up the ranks doesn't necessarily mean people are actually getting any better at what they are doing. And the queuing system guarantees that the upper level "experts" are going to be overloaded.