Not really. I'm not a real lyricist.
I have written at length about the various aspects of music in the past, including some threads that you yourself have started:
http://www.soft.com.sg/forum/showthread.php?272576-Any-tips-on-arrangements
I have tried to get my general thoughts in music together in one place so it does sound a little bombastic at first, but after that it's all there so I don't have to repeat myself.
http://www.soft.com.sg/forum/showthread.php?285411-Ken-Lim-and-The-Business-of-Con-Artistry
http://www.soft.com.sg/forum/showthread.php?294155-Help-Identify-Chord-Pattern-(Broken-chord)
http://www.soft.com.sg/forum/showthread.php?288721-Any-Songwriters-Lyricists-here-Let-s-talk!-D
http://www.soft.com.sg/forum/showthread.php?274942-Calling-LASALLE-music-students-for-advice!-)
To me, composer, arranger, instrumentalist and lyricists are all part of the system. But that's not all there is to the system. There is also the audience, the journalists, the critical reviews, and the culture of the scene at large. So of course when we think about this it will be a bit complicated.
You will notice that there are some flame wars in the threads, sometimes between myself and bombthebasses and whatever bombthebasses wants to call himself these days. Some of them center around the issue: do you have the right to talk about music before you have actually "made" "real" music.
Making music and talking / thinking of making music are two activities that go hand in hand and you usually don't have one without the other. If you only concentrate on the "practical" stuff you will end up with vapid bimbonic music and not much substance. If you talk too much without actually having gone through proper training, you might lose track of reality. But you can start talking about music from day one. You still need to form your own opinion about what is "nice" or not "nice". That is vital and sadly a lot of teachers don't encourage that.
As for lyrics - you will notice that music publications, when they do interviews of the musicians, or they do reviews of the music, you realise that they can talk more about the lyrics than the music. So there's actually plenty of stuff out there written on lyrics. You can go read them yourself. avclub, rolling stone, pitchfork, etc etc. Yes maybe too much of the angmor perspective but maybe there's also a lot of journalism for canto / mando pop, although I’m aware that somehow it’s mainly the westerners who like to intellectualise the music. It’s as though Asians are allergic to critical thinking about the music.
Maybe the most explicit thing I have written about lyrics is here:
http://www.soft.com.sg/forum/showthread.php?218103-Please-Help-Review-My-Lyrics-)
So basically in summary there is a triad – your lyrics, music journalism, and the way you conceptualise your music. All these three things are feeding off each other. Maybe you add the fourth thing – how your audience (assuming you actually have an audience) is conceptualizing you / your music. Other than that I won’t go into the details. If you want to read about lyrics any music magazine / music blog out there will do a so much better job than me.