EDIT 2: Corrected a major calculation error in the original linked spreadsheet. If you downloaded it prior to 4:30 PM EST on 12-6, please re-download.
EDIT: OK, so I completely ran out of time to do anything comprehensive with this. Cata is in just a few days, and I am swamped with work.
What I did do is edit sp00n's spreadsheet with Level 85 AEP values (for hit, I used the values for white hit as capping yellow / spell is something you would do via reforging), and started adding some leveling gear (yellow highlight, my concern was on where to go to get powerful quested gear on the way to 85).
Link:
Rogue Cata Entry-Level Gear
I may be doing some more work on this by Tuesday.
Also changing thread title.
My original post on reputation rewards is below:
Looking over the 8 cataclysm factions previewed by MMO Champion a few days ago, I made the following observations:
Ramkahen: This will be our head enchant faction at Revered (60 agi, 35 haste). There are no rogue-specific epics at Exalted, however there is a blue belt at Revered.
Guardians of Hyjal: Blue chest and neck at Honored, another blue neck at Revered, nothing at Exalted.
Dragonmaw Clan: Blue legs at Honored, epic gloves at Exalted.
Wildhammer Clan: Blue legs at Honored (same stats as above), epic gloves at Exalted (same stats as above). Looks like this rep will be mutually exclusive with Dragonmaw Clan.
Therezane: This is the shoulder enchant rep for every class (two levels, one at Honored, the other at Exalted). There is also a physical DPS ring at Revered.
Earthern Ring: Blue cloak at Revered, Epic ring at Exalted.
Tol Barad Faction: Blue trinket at Honored, Blue mainhand dagger and axe at Revered, Epic trinket at Exalted.
Rewards at Honored: Guardians of Hyjal (chest and neck), Dragonmaw / Wildhammer (legs), Tol Barad (trinket), Therezane (shoulder enchant)
Rewards at Revered: Ramkahen (belt, head enchant), Guardians of Hyjal (neck), Therezane (ring), Earthern Ring (cloak), Tol Barad (mainhands)
Rewards at Exalted: Dragonmaw / Wildhammer (gloves), Earthern Ring (ring), Therezane (shoulder enchant), Tol Barad (trinket)
Possible Strategy: Obviously, do
Tol Barad as much as possible. Get
Guardians of Hyjal to Honored for 2 blues, then either get
Ramkahen to Revered for the belt and head enchant, or work on
Dragonmaw / Wildhammer for the legs, and later, the gloves. Next, either do
Earthern Ring for the cloak and later, the ring, or
Therezane for the shoulder enchants and ring. It may be a good idea to focus on obtaining all possible Honored gear before moving to Revered, and so forth.
Obviously, your priorities may change depending on quest rewards, instance drops and crafted gear. I have not leveled to 85 yet so I don't have much knowledge in this area; feel free to make suggestions and corrections. Hopefully, this will help someone have an optimized leveling and entry-level raiding experience.
Also, don't forget to do 25 dailies and have them ready to turn in on day 1 of Cata; should be a nice little boost.
I expect that mods will want this thread merged into a Cata Pocket Guide topic at some point to avoid forum clutter; obviously that particular thread is not ready to go yet so I made my own for now.