Is there a possibility to make a fresher , Buglesser Paranoid Android Marshmallow Version?
(Green Screen Videos etc. )
IT IS the Most stable and usable Rom for me... Last that didnt Crashes in Telegramm videomessages, Snapchat Filters etc. ... All roms After that fit more or lesser Media Problems (Video , Sound, mp3,etc)
A good phone to consider (if you want MediaTek) is the newest Oukitel K6.
It brings Helio P23, 6GB RAM + 64GB Storage, Android Nougat 7.1, 18;9 screen with bezeless design (nothing like these ugly Mi Mix clones), NFC, Gyroscope and a 6,000mAh battery.
Fill all gaps of Jiayu S3.... But still, we should ask Oukitel for sources and support to MAD.
Oukitel seems to have good eyes for custom development.