The “Megiddo church” has (already!) a published excavation report. The title gives away the conclusion of what the excavators believe the building was: A Christian Prayer Hall of the Third Century CE at Kefar ‘Othnay (Legio). I wonder if it would have attracted any attention if they had first announced it as a “prayer hall” instead of a “church.”
It’s 59 pages, due out in October, and costs $20. Get it from Eisenbrauns.