Originally Posted by
necramar
There seems to be a lot of misinformation in this thread.
Why it doesn't matter if you are 100% hit capped:
First of all, hit is no longer the top stat. In fact, by reforging everything into hit, you may actually be hurting your DPS, even if you are otherwise below the hit cap. To quote EJ (note: this quote is from the MM article, but should apply equally well to all specs):
As a result, you definitely want to prioritize agility over hit rating, and sometimes it may even be worthwhile to prioritize secondary stats as well (i.e. crit, mastery, and haste). For example, my hunter is currently about 49 points below hit cap, but it's actually a DPS loss for me to reforge (or enchant hit) to get to the cap. This is because there are "sweet spots" for all the stats, and sacrificing haste (for example) will bump my Cobra Shot cast time up enough that I'll have to delay an Explosive Shot to fit an extra CS between ES cool downs. Frankly, this can be hard to predict just looking at your stats, so I would definitely use a spreadsheet to verify what reforging options are best for you (femaledwarf.com).
Secondly, hit rating is no longer rounded down for your pet. In Wrath, if you were at 7.99% hit, then your pet was only at 7% even. Obviously, that would be a pretty substantial DPS loss for your pet (and, thus, for you). However, this is no longer true. As someone mentioned earlier, pets now inherit our hit rating directly, so if you are at 7.99% hit, your pet is, too.
Why it does matter:
There are two areas where being 100% hit capped may be important: A) Interrupts, and B) CC.
As for interrupts, this shouldn't really be something you have to worry about. If DPS is at all a concern, you should currently be specced SV (which is substantially higher than MM or BM). SV doesn't have any viable interrupts (ignoring Scatter Shot and Wyvern Sting, which aren't real interrupts). If you are in the type of situation where 1 missed interrupt is going to make or break a fight, then you are also probably going to be most useful to your group performing best at your primary role, DPS. As such, you'll be specced SV and should let one of the other classes with better interrupts worry about it.
This may change somewhat when 4.0.6 comes out (it's looking like MM will be the top DPS spec). If you are MM, then you'll likely have Silencing Shot and may be called on to interrupt more often. However, since Silencing Shot is on a 20 sec cooldown, there are still other classes with much more reliable options.
Finally, the one area where being 100% capped may be worth a (small) personal DPS loss is with CC. A bad hit rating may cause you to just flat out miss your CC, and, more importantly, it may cause your traps to break early. Mobs have a random chance to break CC early, and this chance is reduced based on your hit rating. If you are in a situation where CCing is one of your primary roles and having it fail early may mean a wipe, hit rating becomes more important. However, with something like a 7.99% hit rating, I don't think you'll ever notice a difference between that and 8% flat.