If Pride Dracula was to be a core de facto member of any of the four circles of power that would be a disgrace to the Deadly Sins predecessor. Since they were naturally meant to be neutral, and could only let the general public gain knowledge of their existence, when of utmost necessity.
Meanwhile, Tobi had a tentative plan to make an all-inclusive plan about his family revival which was something that centered around going to the academy. Of all his plans he held for the future, this was the only one that he felt could be very sensitive.
Though he didn't know if it was plausible to conduct research into reviving the dead in the World of Originals. However, that would require a great deal of processing power. Most of what he actually knew were from Horus and the vampire Ancestor Lucian.
And in a situation where he didn't know how far he could go with his plan, he has to spare time to run simulations in this area even still, he could only put his plans aside for now.