I watched this last night - I have to admit, when I watched the "Unification" short, one of the first things I thought about was Shatner having lost touch with Nimoy prior to Nimoy's death - he recounts (his side of) that story here.
I love how he said he wanted the "God" in Star Trek V to be literally God and was talked out of it. But it is interesting hearing his perspective on that process of directing too.
I would love to see the alternate universe Star Trek V where he got to make exactly what he had in mind, without any interference or budgetary constraints.