The part about influencers bringing their followers along with them to Steemit is so true. Anecdotal evidence here, but I for example probably wouldn't have found this platform had I not seen the Youtube video where you talked about it. Word of mouth can sometimes be very effective.
We should definitely welcome influencers signing up here, as well as newcomers in general. Considering the rate of which Steemit already has grown, I wouldn't be surprised to see a lot more influencers (and some of their followers) starting out here in the coming year.