Like I've been saying for a while, everyone's moved onto IOSU, PPC kernel is obsolete which is why we only have one, along with academics getting in the way, unless you get someone who doesn't care about IOSU looking you're not gonna get any more
that makes sense .. so my assumption on your words is that the work being done in MN1's circles on the IOSU are not enough to be confident of success. Or kernel exploit would have been released as it was of no longer any use..