I've been bottling out of a carboy, and have added a little bit of wort (maybe a half gallon) before adding the sugar. I make sure to do this as gently as possible with a sanitized funnel, running down the side of the carboy, to keep oxygenation to a minimum.
Caveat: sample size is small, but so far, no problems. Stout bottling in a day or two, plan to follow the same procedure again unless someone points out why this is bad.
Comments on this idea welcome. I hadn't seen it mentioned before.