Hyphy could have been something but people didn't keep it simple. People should of ran with the simple formula but then yellow busses saying the word hyphy over and over again. The Gemini is platinum off of what sounds hyphy to me. I have not analyzed the synthesizer and the drums but it sounds hyphy. It's cool when you think about it. 8 years after 40 and short had a resurgence because of hyphy a younger artist finally went plat off it.
Keeping it simple means very quick creative exhaustion.
Which is the fundamental problem with hyphy and with all other dance/party oriented subgenres of hip-hop - they only work when they're simple but because they are simple they have a limited lifetime before that unpleasant moment comes when nobody can think of a way to create something fresh within the style anymore. And then it''s over.
This is the reason why people still remember and always will remember 90s hip-hop but have forgotten about a lot of what went in the 80s and most of what happened in the 00s. Because the 80s suffered from the same problem - at the time rap had to differentiate itself from other genres while the samplers and other technology that enabled what happened later was not yet available. The result was a simple drum machine-dominated sound that is now largely forgotten. In contrast, in the 90s you had people who first, had the tools, and second and more important, were raised in the 70s funk tradition (they were kids in the 70s and in their 20s in the 90s) so you had a lot more musically rich sound that people will always remember and still go back to for inspiration. In the 00s numerous convergent factors killed that musical element and we got a lot of tone-deaf production and horrible music:
1) The crack down on sampling in the mid-90s meant it was a lot more expensive to sample and put premium on original compositions, which, however were not that good because most of the people creating them were not real musicians. This should not have been a problem for the underground, which has never really bothered to clear samples, but the majors had to pay attention to it, and the majors dictate the trends, which the underground then follows (because the unfortunate truth is that most "underground" rappers are really wannabe-mainstream ones who will follow whatever is hot now instead of creating their own sound).
2) The tools changed - the computer is the dominant tool for making music today but it predisposes towards a very different sound than when you have live instruments in the studio. So everything became a lot more electronic and plastic-sounding
3) The generations changed - while the people who made music in the 90s were raised with soul and funk, those who made music in the '00s and the '10s have been raised mostly with rap. That's a big difference
4) Attention spans (of both artists and fans) became ever shorter and shorter thanks to technology, which has meant less time spent listening to the music in depth and less time spent making it with the kind of dedication that was the norm in the past