To be honest, I'm actually kinda excited by this.
If the original Bionicle was a biological metaphor on the scale of the human body, imagine the same thing but on the scale of the Earth. Some might consider rapid climate change a kind of "virus" that plagues the larger body of the planet, or maybe whatever things are causing the rapid changes. Either way, stopping viruses is kinda what the Toa do, so it seems rather fitting.
Either way, the topic seems to be something Faber is extremely passionate about. We've seen what kind of things come out of such inspiration, so if he's just as invested in the topic as he was in his own health back in '01, this could be really cool.
I want to point out that Faber seems to be emphasizing the shape. In response to someone pointing out that it's indeed Antarctica, Faber had this to say:
"just the most unknown place of the planet and just a shape"
So there's still mystery here. Only our imaginations can determine what this massive, unexplored place is really hiding, Earth or not. A lot of people seem to forget that there is still a lot of our own reality that is mysterious, remarkable, and exciting. Just because it might be Earth doesn't make it any less fantastic.
The opening line of the caption is also this:
"Shape of the future or shape of the past? "
So again, a shape. Maybe it is simply a representation after all? We can't say for sure, but we do know that this somehow involves a lot of ice, en emphasis on past and future, and potentially themes of climate change.
I'm excited, I really can't wait to see what this will be.