Considering how we function sometimes, that wouldn't surprise me. Kini would have to show his face for your theory to be correct, though, and THAT'S a real stretch.
A note on the above: this is JUST MY OPINION and NOT SOMETHING THAT HAS BEEN DISCUSSED INTERNALLY, but if the time ever came where the majority of our current cast members drop off, I would absolutely support passing on the TTV mantle onto the "next generation" of sorts, or at least grow the current cast to such a point where if the "old guard" leaves it wouldn't destroy TTV itself.
The current crowd simply will not be enough to sustain TTV forever; we all love what we do, and as of current we're all able to juggle the channel and our personal lives, but there will come a time where some people will probably have to move on for the sake of their lives. Not necessarily quit the channel entirely, but scheduling may not allow for them to dedicate a large amount of time to content creation and channel management. It's important to widen our group with fresh faces eventually, I feel; people that haven't been in the community for 8+ years like most of us have been, people that haven't become jaded in a lot of areas like we sometimes are. BIONICLE is new again, it's fresh; that means a wealth of people with fresh perspectives to pull from for the future of TTV.
We're in a prime position where, over the next couple of years, we can potentially grow the TTV Brand to a wide degree and bring some new people into the fray. That's a personal goal of mine (although not at this precise moment, we have too much going on as it is lol); time will tell if it actually works out that way. Again, this is all just my personal perspective on things.