My dream S6 would be an S5 plus bigger battery, FM integrated Radio, 3G 64bit processor, FULL HD DISPALAY NOT 2K OR 4K BULL**** (4K is useless on such a small screen), I am a great fun of Galaxy series and I sure do hope Samsung people read this forum and analyze user requests. I have an S3, for my wife I bought an S5, I would have bought and S5 too but it does not have FM Radio and I do not understand why Samsung downgrades some stuff from generation to generation, for example S4 does not have radio but has temp sensor, s5 has no radio no temp sensor. Just make a complete phone and people will buy it ... and do not worry!!! They will change it in 2 or max 3 years time. I would prefer a material other than aluminium maybe carbon fiber or something more futuristic, metal body is so 3 years ago. Moreover metal phones have problems with bending and deformation as they are so thin.
PS.: AND BETTER OPTIMIZED SOFTWARE. NO LAG EFFORTLESS EXPERIENCE