hmm...I don't mind to play through all the guild quests in one game...speaking as a true soldier of fortune....what I don't like is that I automatically become member or even worse leader of all these guilds after finishing the questlines...I do not want to be archmage etc... would be better to get some nice useful rewards for the main guild quests, a player home, supplies, new gear, companions whatever and the OFFER to become a fully member of the guild..from this point you could rise up the ranks of the guilds (if you want to join) by doing new quests and improving the necessary skills which would be required for different ranks.....this would be the point where the rollplaying starts....
just my 2 cents
cheers