Well lets think rationally here, there is no one to replace keating at the moment with the likes of Nathan Smith and Kaysa Pritchard injured, he is the best (dear god) that we have for the time being, so keating stays, whether we like it or not.
Kelepi should remain on the bench as throwing him in the deep end will be potentially detrimental to his development as he is coming along nicely.
Kenny Edwards and Harrison are viable options, however they haven't exactly been killing it for wenty. I feel for Ricky here as he doesnt have too many options other than wait the year out with a sub-par backrow and really focus on getting the signature of a gun backrower (Papalli and Hock would of been nice).
As for Loko, his size and power wouldnt been as useful further in field as he would be up against similar sized opponents, plus we would be weakening a position for a ploy that may not even be beneficial.