Lunox99, you ave exposed some very interesting points. Beggining for the bottom of your comment, that's very common that people think that I only read manga because that's my style of drawing, and it's not like that. In fact, I don't use to read manga almost ever (some from Urasawa and kentaro Miura), but European comics, some american comicbooks, and now I'm much into webcomics, with lots of different styles. The fact that I draw manga must be becasue I grew up watching '80s anime on tv -I'm not exactly a "teen"- and I have that "imprint". But lately a lot of friends are encouraging me to use a different style of drawing and narrating, to open my target. There are still a lot of prejudices about manga. Thank you so much for your suggestion (this is the 3rd time in a week that I receive the same, and I don't believe in casuality ^^).
Talking about the manga drawing style, I find very important that there are different studios and series with a clearly recognizable style, to make followers who want to imitate that style. That's how a new wave of artist is born. I miss seeing people imitating the drawing style of some series as it happened with Dragon Ball, for example.
About the themes, you're right when saying that this is very difficult to find new ideas. I think the problem with Japanese comics is the publishing method: comics are included in gender magazines and every comic has to fit in some of them: shonen, shojo, seinen... (Though they're also alternative mangas, I pray to see them!). When I published my first manga in Spain it was a challenge because of this. People asked me wich genre my manga was, and they needed to know if it was a shojo or a shonen... but my comic was both, and that's something nobody could assimilate.
The comic world needs urgently a digital publishing format. It's not rational that amateurs translators have a comic translated in a few hours, but for publishers it take weeks or months to make the same. Because they need to publish +160 pages volumes, as well. And I see a lot of inspired and talented artists making webcomics who could work professionally with publishers if the industry modernizes finally.