Hi!
Would it be possible to include DBpedia as a matter of urgency. They added the cc-by-sa because at that time wisdom was to have the same license as Wikipedia to prevent upset people. Given the strong relation between what we do in our projects and what they do in theirs it is easy to come up with user scenarios that will benefit both our projects.
I understand the reason for CC-BY in DBpedia, and it looks like adding it to the license/copyright/acknowledgment page should be enough. I planned from the start to launch it with small number of endpoints and then extend it. I plan to see how it fares and if there's not anything wrong that we've missed (doesn't look like it so far, which is good) and add next batch next week - which means it would be deployed in April 10th deployment window (we deploy WDQS stuff on Mondays usually).