My immediate concern is simply that Heidelberg is expecting to launch Real Soon Now, and my understanding is that they are waiting for .LRN 2.0.2 to do so. If we take the current fix-for-2.0.2 bug priorities at face value, they have around twenty blocking bugs, spread out across all three of the categories you have identified.
So if I wait for all of these bugs to get closed before releasing 2.0.2, it's going to be months. I thitk we, and by we I mean you, should check with Heidelberg/MIT and demote most or all of these bugs to pri 3. Presumably they won't get fixed, and then we'll roll them to fix-for-2.1 pri 3. But that's better than having a bunch of non-critical bugs mixed in equally with real showstoppers.