Mages definitely need some cool new spells. We had invisibility taken away and we got slow fall instead? Bah. Most useless spell ever. On top of that it even takes a reagent!
Slow fall saved my ass once in Gnomeregan. I was running down the ramp to the elevator to meet up with my group. I forgot all about the level 24-25 lepers that hung around the ramp, so I ran down there and aggroed 5 of them. Even with a 6 level difference, 5 mobs is too many for a mage to take on, and they got my health to around 50%, so I popped on my mana sheild, frost novaed, and ran toward the elevator. Luckily it was at the top, I blinked to it right as it started down - so I was falling. In a panic, I hit slow fall and it kicked in just in time for me to land softly.
I'd like to have invisibility back too - I guess it was a problem in closed beta where mages were climbing to hard-to-reach areas and nuking people where the guards couldn't get them, people do that on my server anyway (Gadgetzan and Booty Bay are especially bad) so they should give us invisibility back.
Unless it was causing some other problems I didn't hear about