A successful act of mining will yield exactly the optimal quality and quantity for your mining level and skill bonuses.
Adjustments are made, in my understanding, for failures, which should yield one(!) failed piece of production lower in quality, not reduce the quality of the whole pack altogether.
There will also be a chance to get a higher quality than the node if a better one can be mined nearby.
That is, it will still be profitable to find more powerful nodes and the stanza of information about the node will not become obsolete.
And if someone is going to be completely unlucky, then we go to the transmuter of professions, put 4 elements and get 1 higher quality (+5). Or 2, like now, but with a chance of failure.
Adjustments are made, in my understanding, for failures, which should yield one(!) failed piece of production lower in quality, not reduce the quality of the whole pack altogether.
There will also be a chance to get a higher quality than the node if a better one can be mined nearby.
That is, it will still be profitable to find more powerful nodes and the stanza of information about the node will not become obsolete.
And if someone is going to be completely unlucky, then we go to the transmuter of professions, put 4 elements and get 1 higher quality (+5). Or 2, like now, but with a chance of failure.