Who is John Galt?
You can change your faction without ending the campaign. In some of my chars I didn't even bother to end factions, only play till gather all elites from first professions, which are scatter in both sides.
Edit: I think you need to have more faction from the side you're playing though, so if you start luxon, certain npcs will only talk to you if you have more luxon faction than kurzick.
Last edited by Barbas; 2012-03-05 at 11:21 PM.
you pick one of them after senjin district mission and you stick with them until after gyala hatchery (luxon) or eternal grove (tree-mo) after either one of those missions (it splits between one or the other) you're free to pursue whichever faction you truely like the best (which is luxons)
once you complete the prereq for eternal grove (that is you can enter the mission) you should be able to persue the luxon chain, even without actually completing eternal grove
of course you could just say "fuck you tree-mo's" and stop repping up with kurzick (or cash in for ambers) and start earning luxon faction for your quest
you are considered "allied" to whichever faction you currently hold more faction banked (not total lifetime) even if you are in a luxon guild and have more kurzick than luxon faction currently
Hmm coulda sworn it was locked in much like it is with nightfall and the two hero branch points but its been a long time since I played a toon through factions so I may just be recalling the weird faction balancing act required and remembering it as a lockout. On the other hand it is prety easy to go back and do the second after you finish the campaign on a new account. Run through one branch, kill shiro, spend your faction and then go vanq an area for the other faction, you'll probably be at 10k after one zone. Even better if you want to run an alt through you can just gather faction with an already strong hero team.
Who is John Galt?
During the double Kurzick/Luxon weekend a few weeks back I got close to 500k for both Luxon and Kurzick and Vanquished all Forest/Sea areas while doing so. (you need 550k to get the title in HoM, and I'll have that once I turn in my ordinary mode and hard mode storybooks)
On the subject of storybooks. In case you weren't yet aware: http://wiki.guildwars.com/wiki/Storybook. Quite a bit of extra money to be made by having those in your inventory. If you haven't gotten Shiro's Return yet, go and get it now and pay 100g to fill it with the missions you have already done.
I don't know if you already did Eternal Grove, but if you didn't and want masters you should read strategies (both wiki and forums) and possibily do it with a friend, it's possible to get masters alone but it's kinda hard.
As for Gyala Hatchery it's easier to do with Alternate back way described here http://wiki.guildwars.com/wiki/Gyala .
The rest of missions should be piece of cake.