Both in NV and STC, Kirk is a very flaccid, un-Kirk like character. He rarely makes an decisions or those decisions are made for him by others. These fan films never have Kirk drive the action and treat him more like a Picard, having conferences and seeking a consensus of his senior officers.
That being said, Brian Gross may look the part but he sure doesn't own the part. He has no presence in the role at all. I don't buy him as Kirk, much less the lead of the show.
Natira