T1 gives nice choices for PvE and PvP CC, which, contrary to popular belief, used to be a MAJOR part of the game. If this is any sign of needing more of it, I'm all for it.
T2 again provides utility, which I am an avid fan of. Remember kids, there's more to raiding, PvP, and DPS than just pure damage.
T3 has the most weeeeeeeee moments for me when I was reading it. Being able to choose between having a single instant cast spell or being able to cast while moving. Another thing that can separate good Mages from the LOL I HATE EVERYTHING CROWD.
T4 is the least exciting, but still gives a choice in what kind of survivability you want.
T5 is a tier that, if you don't like, you didn't farm the Turtle or Pig Polymorph spells.
Again, I've granted the last tier is nothing special, but I think people are confusing "renamed" with "new". Having looked over all the other talents for the other classes...a lot of them simply aren't new EFFECTS, but new names in new places. Further more, we don't know the full extent of class changes, just talent changes. Who knows, we might not need any padding in super fancy talents since we'll be doing fine anyway.