i agree completely.
the lyrics of a song are very important to me, along with the instrumental parts.
alot of jrock seems to be behind instrumentally, not innovative and it seems that its a few years behind english language based music, and it all seems very generic IMHO.
if i can't understand it then i don't want to listen to it. there are a few j music that i will listen to, the opening to gundam 00, and the first opening for bleach, but i like to understand my music.
i listen to hardcore and yes, i do understand the screaming, so i know what you mean by that too haha.
i have no problem with some instrumental japanese rock. they do have some sick guitarist.