Hoi,
Two things to consider; the Wikipedia community and the Wikidata community are two separate entities. As far as I am concerned, Wikidata needs more data to get to the tipping point where it becomes useful to users. I am really vocal about both.
The license has traditionally been a sticking point and the "not invented here" aspect of DBpedia is as well. You are effectively outside the Wikipedia community.. The other part is that the data of Wikidata is continually updated while DBpedia is not. So in my opinion the best thing that can happen is when DBpedia DOES update with Wikidata. The point is not to absorb it without thinking.
What DBpedia has is a set of properties that work on the data that it has gleaned from the many Wikipedias. There is undoubtedly a lot of documentation on it and, it would be good when this is taken into consideration when accepting and proposing new properties for Wikidata. Obviously only the properties that are currently supported can be proposed at this time. I am quite willing to propose properties based on DBpedia (but so can you).
With the properties in place, we can import data. We can import it from both DBpedia and from Wikipedia. Sanity checks are needed for both sources and as far as I am aware we do not have sanity checks at Wikidata.
What we do have is the possibility to compare data with other sources and that is where the Wikidata community needs to grow and that is why we need much data in the first place in order to get into this. However, we can start building the tools to do this. I hope the DBpedia community can help us with that.
Thanks,
GerardM