The Covenant, now fragmented into different factions, were all mostly under the description of a theocratic organization devoted to the worship of the Forerunners as divine beings.
Evidence suggests to me that many post-Covenant factions were abandoning this belief between 2552 and 2557.
Based on this premise I have 2 queries:
1) What were ONI's best estimates for the rate and extent of the abandonment of pre-Schism religious beliefs among the post-Schism Covenant factions, up until 2557?
2) What impact did the Ur-Didact's presence and predisposition towards homo sapiens have upon the post-Schism factions (Excluding the one lead by Jul 'Mdama) and any social transformations that they may have been undergoing at the time (For example, extent of belief in divine Forerunners, and/or changes in rates of growth/decline of such beliefs, and/or hatred of homo sapiens)?
A third query unrelated to the above:
3) How many planets did the Sangheili control in 2553, and what percentage were inhabited colonies?