Well, I just spent the better part of two hours typing out a well thought out response to your post and had the whole thing wiped when I hit the advanced button to post my files because my token had timed out. I am far too tired right now to re-type the whole thing and I have to get my son to bed. I'll find time tomorrow to re-address your post. In the meantime, here is what I have so far. Level ranges may be a little off because of rested experience and I wasn't really paying attention to levelling points, more the continuity, flow and successfull completion of quests without excessive deaths. Together, they should quest to about level 38-39
Edit
OK, let's try my response again.
I aggree that the ultimate goal is to AFK from 1-80, however at this point in time that is not possible due to the lack of support for flight paths, lifts & boats/zepplins. That being said, I fully believe that those items will be supported in the future, either through plug-in (I know one in development) or integrated into the core of HB.
It's also not possible to currently level 1-60 purely questing on a single continent, there are simply not enough quests for continuous levelling. I think it's best to keep working through Joanna/Mancows 1-60 guide, grouping as many quests together as possible in each section to maximize questing experience and minimize continental/zone movement. Once those are created, we can separate them out into their respective continents and use GrindAreas to fill the gaps for each continent, thus having a 1-60 for both Kalimdor and Eastern Kingdom. For those who don't mind manually moving between continents, they can use the indivdual sections to have 1-60 questing. Down the line, once flight paths/lifts/boats/zepplins are supported we can link the individual sections using whatever code is available at the time to provide 1-60 AFK questing between the two continents, possible even going 1-80 if portals and such are supported as well.
Below are the areas that I have completed so far. I levelled 3 toons using the current 12-80 horde profile, which took me to between level 25 and 27, depending on rested experience. I've levelled one of those characters to 39 so far using the below profiles and am working my way to 60. Once I have completed that I intend to go back and level the other 2 characters I have to work out any bugs and better optimize the quest order. That will take some time to do, so I'm release what I have so far for others to try out and provide feedback and such.
The levells below may not be entirely accurate because of rested experience on my toon and I wasn't totally paying attention to when I levelled, but they are designed to be run in order (1 - 6). There are no vendors, I use the Find Vendor option in HB. Also, there are no protected items. The profiles are configured to sell greys only, keep whites and mail the rest.
These profiles were built using Questy, the Active Quest & Quest Order features of HB, multiple lookups on WoWHead and repeated references to the HB Wiki. Many thanks to all the HB devs, plugin & CC devs and profile writers for the countless hours you've put into this product. I am happy to be able to contribute back to the community that has provided so much.
For those that are interested, I'm running this as an undead warlock, default CC, no plugins. My character is equipped with the cheapest greens & blues I could get from AH, so no big investment in gear, though I do have the advantage of a pet.