I was under the impression that low-level tanking was supposed to get tanks ready for their job for the near future. I think the experience teaches new tanks that:
a) You will always benefit if your gear is at or above the recommended level of the dungeon
b) How to mend bad situations like losing aggro
c) How to suck it up if you lose aggro
d) How to deal with DPS who can't wait for you to maintain enough aggro before going wild
It feels like giving tank-stance at that level would make it easier and indeed produce more tanks but good tanks?
Really, a Shield Lob -> Flash -> Flash (Another flash if you're feeling festive) -> savage combo should be enough. Then, maybe one final flash before finishing up and moving onto the next target.