17) People have already explained the merit of both dialog and prose RPGs better than I can. I think, if done right, they're both effective styles of writing and characterization; they each just focus more on one aspect of good writing. Dialog style helps you to better grasp the voice of your character, while prose, despite its bits of dialog, help you characterize through thought, action, and mannerism. Done poorly, then I can understand your grievances.
But I have to ask. What do thread RPGs disintegrating into inane one-liners have to do with those same games having lazily maintained Taken Characters lists? Those are two separate issues, and the way you put it makes it seem that because thread-based RPGs eventually water down into comment wars, their character lists are poorly maintained. I think that sort of issue has more to do with how well the game mods keep up with their games and information, and introducing a whole new issue isn't doing anything to help support the original point.
19) I agree with you up to "My secret?" Yeah, I still hate the guy's guts, and I honestly believe part of the reason why Part II seems weaker than Part I is because it focuses too much on him now. :\