Not necessarily, these are all proposed changes. We’re discussing different ideas, some of which have more merit than others.
For example, I’ve had the thought that perhaps we could only have four toa, but still keep the six main toa around; If we go with TTV’s proposed changes to Earth, and the other three toa, we have Kopaka and Pohatu as characters who are encountered perhaps in the second year of the line. They focus on different applications of Earth and Water, with Kopaka being Ice, and Pohatu focussing on the earthy and dominating part of Earth. I’ve further extrapolated here: