Konan's probably good enough to take over the research if they still have the rift scar in hand, but I'd expect Sasori dying to delay them by at least several months
Not sure she is. She's "jounin-level" according to Oro, which means Sealing at low 60s or possibly 59; that might not be enough for work this delicate.
... This is bringing my concern about what Oro's Sealing stat is up again. Hazou had to pass TN 60 checks in order to make spec-jounin, so it does seem likely that a "jounin-level" sealmaster has Sealing in a 60-slot. Oro thinks Sasori is decisively better than Konan (I assume), meaning he probably has Sealing 70 ... and Oro also thinks that he is decisively better than Sasori.
Unlike his peers, Sasori is not strong in direct combat. While his general capabilities would likely still grant him a win in a direct match-up, his puppetmastery is inferior to Chiyo's. However, he is a sealmaster of no small skill – while not on the level of myself or Jiraiya, he is certainly your superior.
That would seem to suggest that Oro's Sealing/Biosealing stat is in an 80-slot, or at least high 70-slot. I think the players previously dismissed this possibility based on the idea that Oro would have to have Ath/Alt/offence as capstones, but in the last update, he said:
"I will grant that my shadow clones are competent elite jōnin," Orochimaru said. "Likely superior to any of the Jashinists or Rain ninja stationed on-site. My clones will not threaten Itachi, especially as shadow clones in general cannot be effectively deployed against a genjutsu user of his level."
Which suggests that his combat skills are not in fact his capstones, and he uses biosealing to compensate for this (assuming that Oro does in fact have at least one 80-stat, which seems nearly certain).
If true, this has significant implications for the widespread hivemind perception that we are currently Oro's approximate peer. Granted, Oro is extremely arrogant, and he has huge amounts of veterency which conceivably could be compensating for a relatively low numeric stat, but ... I'm concerned about it.