In MM6, it's still needed, as such situations can occur. We played against Napal in Kingisepp with Valky as Kiryu, and without any rests, she attacked Kiryu on turn 113 and, thanks to the first turn of the archers, defeated the elves. Kiryu took a rest on turn 113; if it had been Ivor, Valky would have lost. And what kind of tournament game would it be if there were also subjective judgments on turns 111 and 112?
And in general, MM6 without a red rush is no longer the same game.