They could be contemplating a Clone Medic, but I think that this was just a necessary failsafe.
After all, YOU SAY you wouldn't put Ewok Elder or Old Daka or whomever in this group, but if 5s boosts the stats of other 501st allies by an amount equal to his own Max Health and Offense when he dies AND it stacked so if you die more than once you could multiply the bonuses, then people would put a reviver in the group on purpose, just to get 5s killed as many times as possible.
Because of the mechanic involved, I think the "no revive" aspect of his kit was necessary whether or not any Clone Medic might be coming along later. And if it was necessary regardless of whether or not a clone reviver is coming, then that means we can't use that language to predict that a new clone reviver is on the way.
Sorry, but we're simply stuck without any reasonable basis for a prediction at this point.
