Ok, so it is a little early to be guessing what the next tanking tree "should" be. However, I had a little time and wanted to see I could come up with:
0/54/17
I personally prefer 2 points in ImpJ, but that's just my preference. I have read all about the 9/6/9, but I just prefer the extra sec.
I put 5 into Conviction for a dps boost, but I am unsure as to whether the 5% adds directly to your existing crit rating or if some other math formula comes into play.
I put 2 into PoJ just because there seems to bit a bit more movement required for raids, I very well could be wrong.
Thoughts, critisisms, etc...