Regenerating health is basically catering to the younger generation of COD gamers who need their hands held when playing these games.
Rations and regenerative items are like a stapled trademark of MGS (heck, even MG 1 and 2 had rations) and by excluding it, the series is just deviating further away from its identity.
Yup, thats was my thoughts exactly. It is good to have certain things tied into a game franchise, Mgs with the codec/mech fights, Halo's online voiceover guy (KILLING SPREE!), need for speed with its car modifications. These things keep you drawn to the game, sure tweak things to go with the ever changing times, but dont forget what got you to where you are!
I'll be definitely playing first runthrough without the target marking system