@choperman:
You know what would be cool is if somehow Tsuna's guardians all gave him there flames. I don't know how but if they could project the flames at him while he uses zero point breakthrough and he could then do some super X-Burner (especially with Hibari's flame). also they mentioned in the The Varia arc that the first guardian of the sun could release a glowing punch, but now that we know the flames can power Ryohei up, and heal his cells faster which he needed to use maximum canon, plus that his ring is a voangolia ring he might be able to do it someday (I'm talking about the one from the past of course). Also what do you guys think will happen with the boxes will they bring them to the past, I hope so because I think the fights have gotten much cooler since the boxes have been added to the series.
oh yeah one last thing I think Hibari will want a fight with tsuna if he beats genkishi
A flame combination would be cool- considering the theme of flame colors, it's not too unlikely either- when all 7 colors combine Tsuna has access to white flames, which are, in real life, the hottest kind of flame. And by virtue of being white, it'd have the highest purity possible.
Past Hibari already wants to fight Tsuna, though when Tsuna beats Genkishi he'll likely want to fight him even more.