I think what he's asking about is whether or not Mata Nui completed his mission with:
A) Teridax dead
B) the Toa Empire as the governing body of the MU
First, I had assumed that Mata Nui would not have been able to complete his final task due to needing Teridax to succeed in its final stages. I believe any Makuta would have sufficed in desperate situations, though, and Mata Nui's ability to make more Makuta is uncertain. However, now I believe that Mata Nui was probably able to reform Spherus Magna, if that final battle between the Toa Empire and the Matoran Universe we saw in Dark Mirror didn't fatally injure him from the inside. I think this is the case because the Order of Mata Nui did not intervene at any point as they believed Mata Nui's task was still going to be completed, even with the Toa Empire in power. Additionally, Mata Nui himself would have deposed the Toa Empire if he believed it would prohibit him from achieving his goal. So either the MU overthrows the Toa Empire immediately after the death of Tuyet, or it lasts through the last year or so until the reformation, in which case the Toa are tracked down and hunted by Marendar on Spherus Magna.