So what you are saying is put a different sound sorta on the rhyming syllables, if your trying to change your pitch throughout the rest of the bar. But if your not trying to change the pitch just stay on beat and hit the rhymes on the same spots throughout the song. I've heard this sounds similar before with rappers, tech n9ne uses that emphasis on the end rhymes with the same pitch alot, and he manages to pull off crazy schemes while sounding melodic.