Miereles, even Romeu, could have kept up with Fellani. Both those players give us an attacking edge, they initiate counter attacks and even general ones. I've always defended Mikel's role.. In the old system. This new style, with the high defensive line, and defensive awareness of all the players (Lampard, Mata et al.) all nullified the need for a literal DMF. Miereles is not a DMF. He's a central player, who will attack more than attack, which could've really helped us today. We should've scored more goals and at times we didn't because Mikel still played the "retention" game. This is not needed now. The system can work without such a defensive player.