This idea should be seriously considered and I urge everyone to read this thread from the start, it only takes a short amount of time to review. But anyway, here are my thoughts on the matter:
If we want people to take bitAssets seriously and to use them, then we should set the example. That means paying workers and witnesses in the bitAsset currency of their choice. Additionally, by paying in bitUSD, bitCNY, etc. it would make the income earned by witnesses and workers far more predictable. It also means individual worker proposals would be much easier for voters to evaluate.
Another huge benefit is that this would create a base supply of bitAssets, stimulate bitAsset market activity, and give greater encouragement and confidence for people to borrow/short even more bitAssets into existence, thus perpetuating a virtuous cycle.