rappers like bun b/juicy j/mc eiht/e-40 make comebacks, not necessarily to their primes (in terms of notoriety mostly but possibility quality too) but to where they were relevant again in the mainstream.
Sometimes it's younger artists reaching out to them (MC Eiht on M.A.A.D. city, E-40 on IDFWY, sometimes it's creating a moment themselves (Juicy J w/Bands).
Pete Rock's gotten back a level of attention with his projects (around We Roll w/jim jones & max b), collabs with folks like Smoke DZA (& the noise around Planet Rock with Planet Asia, although that didn't drop).
E-40 is good for making his own noise every 3-4 years, but getting on IDFWY w/Big Sean was a big look for him. Then the Warriors getting popping brought some more eyes to stuff like Choices (Yup).
DJ Quik's gotten it in with Problem, songs with Dom Kennedy, etc. I could see him doing an ep w/YG & it wouldn't surprise me if he still has a big summer record in him with someone like schoolboy q.
With MC Eiht - he really had a chance to capitalize off being on GKMC - had Which Way Iz West? w/DJ Premier come out it would have gotten attention.
Bootcamp Clik had a comeback when they got down with 9th Wonder & them.
Shyne had a shot when he got out of jail, but even though Godfather Buried Alive had a couple good songs, his third act stuff has been pretty terrible.
When Method Man hooked up with A$AP Mob for Trillmatic (https://www.youtube.com/watch?v=8xda8NvdEfA) it was a good look. Meth Lab came out a couple years after that & didn't sound great/inspired. Had he made a run working with some of the current popular folks in the weed lane (curren$y/dza/wiz)/NY rap (bronson/droog) & then came with a really good project. especially with all his other entertainment stuff popping off.
Who else could you see gaining momentum again, either off stuff of their own, guest features, or having current folks in the mainstream reaching out?
___________________________ He has the confidence of Vernon Maxwell on a yayo binge.