The author has said that the manga's at the half-way point or a little past it and that he has no interest in having it go on too long in order to milk it.
... except there are a dozen spin-offs to take care of the milking.
Sorry to just jump into this thread, but at a glance I couldn't find anything about the following points. Has there been discussion on the idea that
a) the titans are basically just enemy soldiers from another civilization and b) there might be a wall beyond Maria?
I'm at episode 16. Especially the first point seems so plausible to me, but so far nobody has been able to agree with me...
Their light weight might imply that they are just blown-up regular dudes.
Also I really like the portrayal of the Titans in the show. Seeing as they are so close to "regular" humans, but then again not human at all really pushes the point of problematic "otherness" that we experience in the real world also.
Hanji trying to communicate with the Titans had a big impact on me.