Kryo, I think you'd be surprised at what users will do sometimes. Filling a bug report is not much more difficult than making a forum post. This is how most free software development happens anyway. I think that without trying it, it's not fair to judge that it will be a failure. Crowdsourcing has been a tremendous success both in Software and other stuff like Wikipedia (honestly, who would have though 10 years ago that people would put in their time for free to something as immense as that?). Indeed, this attempt at a public beta with the pre-order is another sample of how crowdsourcing works admirably. A few years ago, all betas were internal as nobody thought users would be bothered (nevemind paying for the priviledge).
The thing is that a bug tracker is useful for people to have public access to. Then people can see for example how many people have the same bug, what the progress of fixing it is (or if it has been fixed already) etc.
Anyway, I don't mean to be annoying or pressuring and I understand if at this point of the beta testing this is not a good time to switch. However I hope that they might consider this option for the future. At least give it a try and then check the result. If it failed. It failed and you can always go back to the previous method.