Well, as we already discussed, block is currently a lackluster stat for tanking. But patch 3.2 has some changes in store, and one of those changes is to how much block value you'll see on just about everything, clearly aimed at boosting block's worth.
- Block Value: The amount of bonus block value on all items has been doubled. This does not affect the base block value on shields or block value derived from strength.
- On-Use Block Value Items: All items and set bonuses that trigger temporary increases to block value have been modified. Instead of increasing their block value amount by 100% like other items, they have all had their effect durations doubled. This applies to Glyph of Deflection, Gnomeregan Autoblocker, Coren's Lucky Coin, Lavanthor's Talisman, Libram of Obstruction, Tome of the Lightbringer, Libram of the Sacred Shield, the tier-8 paladin Shield of Righteousness bonus, the tier-5 paladin Holy Shield bonus, and the tier-5 warrior Shield Block bonus.
Secondly, however, any item you've been using to temporarily double your block value either for mitigation or for threat (I used to keep Coren's in my bags for that very reason) will not provide double the block value on the proc, but rather the same amount for twice as long. To use Coren's as an example, it will now provide 118 block value, and when used will provide 200 more block value for 40 seconds instead of 20.
If anything this will increase block's value as a threat stat (I've seen no changes to abilities like Damage Shield, Shield of Righteousness or Shield Slam) as well as giving it a bit more teeth as a mitigation tool. I don't think it's a permanent fix to block, but as a stopgap measure it should make the worth of it a bit more obvious.
Patch 3.2 will bring about a new 5, 10, and 25 man instance to WoW, and usher in a new 40-man battleground called the Isle of Conquest. WoW.com will have you covered every step of the way, from extensive PTR coverage through the official live release. Check out WoW.com's Guide to Patch 3.2 for all the latest!