Universe 7 is the prime universe- proof of this is that it has the best food.
The ultimate warrior Beerus dreamed about was part of a prophecy that an ultimate warrior who bowed to noone & in whose chest 4 heroic hearts, heroic in 4 different ways, beat, it was his destiny to defeat the God of destruction of the prime universe- & start a multiversal reconfiguration.
This Warrior would be formed from 4 warriors- Goku, Vegeta, Piccolo & Tien.
Piccolo would either become Golden Piccolo or some sort of namekian God in his own right.
Tien would become sort of war God with 3 eyes & 4 arms, his four arms technique being foreshadowing for this. Basically, the 3 eyed beings were some sort of minor alien gods who came to earth & Tien happens to be part war God & in course of time releases his inner war God & godly ki & because of his previous training & training he will do will become the strongest war God ever, as much stronger than a regular war God as Goku & Vegeta are stronger than the original SSj God. It makes sense for Tien to no not be entirely human, because he is stronger than krillin but toriyama still calls krillin the strongest human. Tien will now become a rival to Goku once again.
Piccolo may just end up the strongest z fighter or maybe they all will be equals- god-tier the four of them.
Beerus & Whis will merge (the purpose of a powerful attendant in the first place) & become a really powerful destruction incarnate God of destruction.
The 4 heroes will merge & become the ultimate warrior of legend (the one from beerus' dreams), beat the merged whis-beerus hybrid & begin a reconfiguration event that spreads to the other universes resulting in everything changing.
The ending will pretty much be the ending of the chronicles of Narnia, the heroes & brave & heroic characters met during the 3 series of Dragonball will awaken in the paradise beyond life- life was a dream, & time they have awakened to the eternal paradise beyond time. The 12 universes were a passing thing, this is what is truly real.
What do u guys think ?