Was the Tartakovsky series specifically mentioned as being out? I assumed that would be included in the "canon" media along with the 3D animated series.
Thinking back, there is really nothing in there to contradict anything else that is likely to be covered. Even Durge can easily be dovetailed into the existing continuity.
Some of that stuff, particularly the lead-in to ROTS, is fairly noteworthy, it seems to me.
Tartakovsky series is out by virtue of it not being mentioned as being in. The problem with the Clone Wars series as a whole in terms of continuity is that it stepped on much of what was already out there in terms of novels, comics and the Tartakovsky series. Lucasfilm, pre Disney buy-out, was waiting for the end of the Clone Wars series to try to fit everything together. I believe a major problem was when Anakin was knighted. The Tartakovsky series makes it look like it was at least a year or more into the Clone Wars. The new series seems to have it occur not too long after Geonosis.
The other major item from Tartakovsky would be Bariss Offee. Season 5 of the Clone Wars had made her seem to be a contemporary of Ashoka. Tartakovsky and other EU sources made her to be a contemporary of Anakin.
For the most part, it could be relatively easy to integrate since I believe it was only two hours of material. I especially enjoyed the portrayal of Greivous, especially the reason for his cough. However, ROTS Greivous was a pale comparison to what we saw in the Tartakovsky series. Additionally, he has the cough throughout the Clone Wars series which is in-line with his ROTS appearance. If the Clone Wars series was allowed to continue, I think we may have seen an episode that would have essentially retread the Palpatine abduction, which was also covered different in the Labyrinth of Evil novel.