Post by Arideni
For starters, you don't need Tactical Mastery. As protection, you're only getting half the benefit of it at the expense of 3 points...scrap it.
Anger Management is optional - if you feel you need it for now, keep it, but get Improved Thunderclap. There's no other reason to be in the Arms tree than these two.
Going back over to the prot. tree, where is Focused Rage? You can't leave that empty, it's one of the key talents that makes 31+ protection viable. You may even want to consider Imp. Sunder Armor. You may even want to drop Imp. Bloodrage when you no longer need it.
Imp. Revenge is largely for 5-man tanks only...if you do anything other than that for 90%...you're better off scrapping it (and even then I personally wouldn't use it).
Imp. Shield Bash is somewhat preference, but I don't find it necessary in PVE. If I know a mob spell casts I'm either going to reflect it or interrupt it.
It appears you are looking for a build to enjoy 5-man content, but maybe some of the harder stuff & with pickup groups.
That said, here's your revised talent build (w/ Imp. Taunt included)http://www.wowhead.com/?talent=Li0czZVZbEtoIzzcxst
If you do not have 490 defense, make some sacrifices & take Anticipation.