The problem with making Spellsteal too mana expensive is that it's an important part of certain rights nowadays (think Maloriak and those caster mobs in ZA with the crazy Spellstealable haste buff). Increase the mana cost by enough to discourage its spamming in PvP, and you'll mess with the PvE aspect as well (particularly for the Arcane tree). I think the cooldown is a good solution, though it'll make duels with resto druids a lot less hilarious.
One of my first ICC10 runs on my mage. We get to the gunship, and I run up the ramp with everyone else. Without thinking about it, I tapped Blink to move to the front of the group... and proceeded to blink right off the far side of the ship.
My guild has continued to refer to me as "the guy who Blinked off the lootship" ever since... and it's been a few months since this happened. *shame*
Heart of the Aspects video and giveaway
Feb 15th 2012 4:27PM (WoW)12 Days of Winter Veil Giveaway: Spectral Kitten loot code from WootLoots.com
Jan 1st 2012 2:31PM (WoW)12 Days of Joyswag: Nintendo DS and eleven (11!) games
Dec 22nd 2011 11:18PM (Joystiq)BlizzCon 2011: Opening Ceremony Liveblog
Oct 21st 2011 1:59PM (WoW)Arcane Brilliance: On the 12th tier and the set bonuses thereof
May 14th 2011 3:17PM (WoW)Breakfast Topic: Let's talk about fun ways to die
Oct 4th 2010 2:10PM (WoW)My guild has continued to refer to me as "the guy who Blinked off the lootship" ever since... and it's been a few months since this happened. *shame*
Half-Life 2 for Mac hits Steam on May 26
May 25th 2010 8:51PM (Joystiq)TUAW Back-to-School Giveaway Day 13: an iPhone
Aug 29th 2007 12:14PM (TUAW.com)TUAW Back-to-School Giveaway Day Seven: White Apple Pen
Aug 21st 2007 10:24AM (TUAW.com)