You're probably right, even as a reliever in the beginning of the season he was still on more of a long man/starter schedule. But all the reporters have said that a positive side-effect to him going short today would be potential availability Sunday.
But it also depends on the context. We're not likely to see Wheeler on Sunday either but if it's the 9th inning of a tie game and the best relievers have already pitched, or if it goes to extras, who knows.
For all the talk about Falter and a potential opener in Game 4 I still think a RH opener for Suarez in a potential Game 5 would not be the worst idea either. But you'd have to be particularly courageous about it and actually use Eflin (assuming Thor pitches tomorrow). Ideally you don't want the mid/lower-end relievers ever facing the top of that Braves order, whether it's the 1st, 5th or 8th.