I'm a firm believer in not going in to heroic instances until you're good enough that the rest of the group doesn't have to carry you. I know this concept will be alien to some people but I don't want to be the cause of groups failing.
On my paladin, I had a set list of equipment to get before making the leap and coincidentally I hit revered with all the factions at almost the same time. Now I'm on my rogue and the revered rep minimum has been removed but I'm not certain what the goals are I should be aiming for and whether there's gear I need.
I forget whether I logged out in pvp or pve gear but assuming it's the pve set, the only equipment I know I need to upgrade is my MH weapon, aiming for the Merciless Glad sword, then to get Mongoose on both MH and OH. Having said that I'm at 7500hp and that feels too squishy.
My armory is in my sig - Firecrotch. Oh and before anyone says I've got spell damage on my rings, I'm still working towards 375 enchanting, then I'll put a sensible enchant on.