Shounen lovers all see it happening before their very eyes: a generation of manga series coming to an end. Some series may have had it coming, and others may leave fans disappointed, but there is no denying that we are reaching the end of this era's giants, and new ones will pop up and take their place. That's how writing shounen manga works. It's happened before, and some of us have seen it too. The late 80s and 90s showed us love for series such as Dragon Ball Z, Yu Yu Hakusho, Sailor Moon, and more. The 2000s gave rise to series like Fairy Tail, Naruto. Bleach, and even cult hits like History's Strongest Disciple Kenichi.
Getting to the point: All of the manga just listed are popular shounen that are all somewhere in the final arc of their respective stories. Big spots will be left open, and there is no preventing that. Here's my question: which up and coming shounen titles can fill these spots? That's up to you to predict!