A full duration Shield Bash is often better than an easily broken sleep mid-game. It's a godsend when a PLD runs over and and stuns the people who are repeatedly smacking my face. It allows me to Sleep/Freeze them without Swiftcast or Surecast. Instead of having to use them defensively I can hit someone with a Surecasted Fire or Fire III and Swiftcast a Flare.
It's equally helpful to do this for healers and SMN for analogous reasons.
Also - buy a ton of TP consumables. They are dirt cheap and 300 TP every 1.5m isn't bad.
