I can't help but think that it would be a good thing if the PowerFactor could power all four Factor pedals, but from a business/manufacturing viewpoint, I can understand why the first versions don't. Maybe in a future revision? I can at least hope… and one wall-wart and a power supply, or 2 power supplies, is/are better than 4+ wall-warts.
Is the power supply for the new Space pedal the same as the other Factors? Same voltage/current requirements? If so, the wall-warts replaced by the PowerFactor could become back-ups.