I've not seen anything on this topic yet but I personally would love to see a cinema mode included in the full game. Activisions CoD titles include an extensive cinema mode which allows you to view competative matches from any angle after. From what I hear there was similar in the Halo games (never played halo).
With both these companies involved I feel it's a definate possibility and with PS4 and xbox1 both having there own recording im sure there is a greater call for this than ever before.
Having not played halo I will use call of duty as the example. Personally I'm not a fan of CoD but there cinema mode is truly fantastic, recording previously played competative matches and being able to view them from everyones point of view in first or third person mode plus a free roam camera. The ability to pause action sequences or rewind really gives you everything you need to make that good montage 'Great!'
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halo had one