As far as what you can do different.. that's hard to say. I think you've been perfecting a unique sound that works for your voice/style and is dope. Wouldn't want to mess too much with a proven formula, BUT I do have a couple of people in mind I think would go well with your sound. Are you willing to work with rappers who aren't with the shit? Seems to be the main people you collab with. Anyway....
First would definitely be Tree from Chicago. He does all his own production too.
https://twitter.com/#!/MCTREEG
[video=youtube_share;hZEwZAtRmxY]http://youtu.be/hZEwZAtRmxY[/video]
[video=youtube_share;qhJQx91nN4Q]http://youtu.be/qhJQx91nN4Q[/video]
I think an obvious choice would be HD or Blast Holiday, both from North Oakland.
https://twitter.com/#!/HDofBearfaced
https://twitter.com/#!/blastholiday
[video=youtube_share;vdo7Z6iYSVs]http://youtu.be/vdo7Z6iYSVs[/video]
[video=youtube_share;Scudieh9owY]http://youtu.be/Scudieh9owY[/video]
Nacho Picasso from Seattle is dope and his producers Blue Sky Black Death are the shit.
https://twitter.com/#!/NachoPicasso
[video=youtube_share;Gy4slof2YK4]http://youtu.be/Gy4slof2YK4[/video]
[video=youtube_share;vj7Bm61hCk8]http://youtu.be/vj7Bm61hCk8[/video]
SpaceGhostPurrp from Miami is tight, for a youngster he loves the old school 90s rap sound.
https://twitter.com/#!/SGHOSTPURRP
[video=youtube_share;NBDOzmT0kYM]http://youtu.be/NBDOzmT0kYM[/video]
As far as just producers go, Harry Fraud is killing it. The rapper Action Bronson is tight too.
https://twitter.com/#!/HarryFraud
[video=youtube_share;Ha_Z8ngDQgM]http://youtu.be/Ha_Z8ngDQgM[/video]
[video=youtube_share;wvTxDg_cnJw]http://youtu.be/wvTxDg_cnJw[/video]
I think it would be dope if you hopped on a Clams Casino beat at least one time lol.
https://twitter.com/#!/clammyclams
[video=youtube_share;IapZWnNdb_o]http://youtu.be/IapZWnNdb_o[/video]
[video=youtube_share;sGssNoK_tP0]http://youtu.be/sGssNoK_tP0[/video]
I got more but I'll stop now lol.