Is the Frost Mage ever going to be competitive in PVE? (I know it is within about 10% but it's still the lowest DPS spec in the game at the moment)
Part of why we are changing talents in 5.0 is to let every spec have a shot at getting good utility. This means we can abandon the current (and tired) model where some specs (Frost, Subtlety especially) have to trade off dps because they have good control / survivability / escape. The biggest difference between Frost, Fire and Arcane in 5.0 will be which spells (including procs and other mechanics) you use to do damage.
Hey there, since the arcane mage playstyle is a bit simplicistic nowadays (one button spam in burn phase and two button use in conserve phae) can we hope to see other, more engaging ways of spell interaction? Would it, for example, be possible to get a resource system out of arcane blast stacks or can we get more spells into our rotation?
Arcane Mages' rotation (or lack-there-of, depending upon your point of view) is something we have plans for in 5.0. We still want mana management to be a major part of their gameplay, but we want to mix up their rotation a bit beyond that. Additionally, their rotation being entirely immobile is debilitating for them at times. We're currently planning to include Arcane Barrage in their PvE rotation, so that they at least have an instant GCD that allows them to move small distances without losing DPS. Arcane Missiles while moving is something that we've considered several times, but currently aren't planning to use (that may change though).
You mentioned at Blizzcon that all mages will be getting Living Bomb. How will this along with talented Scorch be balanced so that it is not too powerful for fire and too underpowered for other specs? Because certain spells like Arcane Blast and Frostbolt will be only available to their respective spec, does this mean the specialization bonuses such as your fire spells do X% increased damage are being removed and the extra damage worked into the spell itself, so that cross spec spells such as Living Bomb do the same amount of damage no matter which spec you are in?
Mages don't really need their +fire, +frost or +arcane specializations in 5.0 because only Fire mages will have Fireball. So Fire mages won't do more damage with LB or Scorch. They will still feel like Fire mages though because of Fireball, Ignite, Combustion and Hot Streak.
Why did you pick Blast Wave, Dragon's Breath, and Slow as the level 90 mage talents? Most every other class has gotten new skills at 90. Why put spells we mages get a lower levels at 90?
You know, that's an excellent point - we've heard from several people that Mages could use a few more new talents. We'll take a look.
I love ring of frost AND Cone of Cold, why will i have to choose ?
We think choosing between two powerful things is a lot more fun and interesting than choosing between a no-brainer and pile of poo. In this case specifically, we thought that mages and Frost in general have too many CC abilities and we didn't want to keep adding more and more with every expansion. But if you have to choose which CC you want, then it gives us the design space to keep adding potentially interesting alternatives.