Without a doubt, the new Ancient Literature section made available in Logos 6 has been the most useful addition for my own work.
One additional resource that I think could be profitably added to this collection and data set is David Instone-Brewer's work in his Traditions of the Rabbis from the Era of the New Testament,series. I've appreciated his close analysis of possible New Testament parallels for early Rabbinic topics and think that this series would be an excellent addition.
