Frostbrand does around 400 damage per procc for me on a mob with 5.000 - 8.000 healthpoints. To finish a mob off after some lightning bolts, i rely on flametongue. I won't need any burst at this point, flametongue does allways provide the same expectable damage, and that's why it's far a way better then frostbrand in my opinion.
I've done all quests in netherstorm and shadowmoon valley with a restoration specc and i did all quests before that (including 3people recommend) with an enhance specc. Restoration is for outlasting, Enhance and Elemental are for burst, both work fine.
Well, on topic - i dislike that blizzard can't hold up with the top guilds and showing their gear properly. I don't want to see shadowpriests, mages and warlocks with spellstrike and their tailoring clothes only for any longer.
And the "see an upgrade from your gear" option is a nice idea, but simply listing some higher ranked items via itemlevel doesn't really suits for it. And what's about those blue items, that come close to t4/5 epic quality or are a sidegrade or even superior to. The the healershield of magtheridon for example is ranked higher than the
[Aldori Legacy Defender] while your are looking for better items for your tank.