Originally Posted by siletzspey
Based on the responses so far, can I conclude that sitting on some lees for an extended period is ok, and potentially even beneficial?
No, but some yeast strains are better than others. Certain yeast strains get pretty foul from aging on the lees, but others are far more neutral.
There is no benefit from aging on the lees, though. Even sur lie aging in wine means stirring the lees to avoid unpleasant off flavors.