My best guess at the Raven safety position over the next few years would look like this:
Starters: Huff, high round rookie (Elam/Swearinger/Cyprian/Jefferson/Reid/Rambo)
Bench: Ighedibo, Thompson, Brown
Starters: Elam or other 2013 draft member, Huff/Thompson/Brown
Bench: the other two who don't win that starter's spot
Starters: Elam or 2013 draft safety, Thompson/Brown
Bench: Thompson/Brown loser, Huff, 2015 draft class rookie
Huff will probably count against the cap for $2.5m in 2015, which makes him potentially expendable, however I think for a guy with his versatility, he still would have a decent chance at being a Raven. $2.5 is too much to commit to a backup safety, however, I think the Ravens can easily justify that given that the 3 other guys at the position will all be inexpensive and that Huff can fill in at CB if needed.
starters: Elam and whoever out of Thompson/Brown gets re-signed in free agency, the other would be a free agency casualty
bench: 2015 rookie, someone else
Assuming the Ravens draft a high-round safety in 2013, I think they are set at that position for the next 2-3 years.
Also, the addition of Huff might signal that the Ravens will not HAVE to draft one of the elite safeties in this upcoming draft. I still think it's likely, but it's entirely possible that they are content with Huff and Thompson as starters and Ihedigo and Brown as the two backups. Ihedigbo should not be starting, though, unless necessitated by injury. The 5th safety could be a guy drafted later in the draft or they could look at Cook/Levine for that spot. Or they could just go with 4 safeties and give another position an extra position. Several Raven teams of past years operated with only four safeties.
I am not sold on this back end of this defense outside of what I know, I know Webb, Graham and Chykie, Huff a solid veteran, but i'm not sold on any one else.
From the small sample we got from Ihedigbo, I actually really like his play. He's a real hard worker and plays what ever role the coaches want him to. He obviously has made a solid impression, or they wouldn't continue to bring him back. I love his digging celebration after making a tackle. IMO it's like he's demonstrating the work he puts into the game.
He's a better tackler, that's for sure.
I think the majority of D will be competing for time or a spot. A normal when you are shuffling an entire Defense or Offense, Ihedigbo falls into this category.
TJ McDonald is another safety who at one time had a marginal 1st round grade and who has since fallen.