A change in pronounciation should be used rarely and it still doesn't change the fact thT the lyrics are weak, and most of the time it's actually the beat that makes the lyrics go hard, you can tell when someone is spitting fire by reason his lyrics. I'm all abou timing, flow and imagery, you gotta Yin Yang the thing you can't do without the other even if you do get famous, it was probably your looks and outlook towards the industry instea of the music itself. Also never like Kanye, like I get it, but it's nothing new other than the beats being very mainstream and easily accessible by the masses, Kanye is a producer, I don't see much when it comes to monotone othe than te fact he probably was one of the firs to be monotonous.
Thinkless, read some more shit that appeals to you, level up that grammar, you may not become some faceless famous chode, but as underground goes, the good shit will love on and be rediscovered as the mainstream is buried beneath the ooze that slips up from the cracks of rot.
I'm not just a rapper, but an artist, I've learned and taught myself many many different styles ranging from racist ridiculous country sounds to technical death metal to jazz to rap and classical, I'll learn the ins and outs out of the things I can.
Diversify, don't box yourself in by thinking your already great an has no need for inspirations, I hate win artists think like that. Collaborate, try different things try and use words you hardly ever use ever.