I think he's suffering from not being Mark Lenard. Mark's performance and demeanour is distinctive and unrivalled. It's a bit like how Benedict Cumberbatch is a fine actor but can't come close to being an equal of Montablban's for Khan. Frain just come across as just another Vulcan right now.I'm not sure I understand the complaints about Frain as Sarek. I don't have enough to go on yet to see how well he's doing. I really want him to succeed; perhaps I'm just dazzled by his outstanding performance on Orphan Black.