I tried to make an IMAX edition edit back when this originally came out on iTunes in August, got as far as the Kronos scenes IIRC...and likewise, the missing piece was the fixed 16:9 broadcast version - doesn't have to be EPIX if we want since the broadcast master that Paramount sent out (apart from Sky Movies UK who specifically request scope versions whenever possible) is fixed 16:9 with expanded IMAX. Maybe others in the US can check if other HD VOD providers have it in good/better quality with 16:9?
In case anyone is interested here some bits from my unfinished edit - https://vimeo.com/channels/648915 The frame problems on the iTunes version meant that audio is a bit out probably...