So The Last: Naruto the Movie came out over the weekend in Japan, and one of the things which viewers get upon entering (on a first come, first serve basis) is a little booklet that details the movie and acts somewhat like a small databook as well.
http://naruto.wikia.com/wiki/Retsu_no_ShoRaw scans of the book
http://tieba.baidu.com/photo/p?kw=%BB%F0%D3%B0%C8%CC%D5%DF&tid=3451578080&pic_id=7abfc9fcc3cec3fd0bb19c3cd588d43f8694271d&pn=1&see_lz=0#!/pid7abfc9fcc3cec3fd0bb19c3cd588d43f8694271d/pn1You know how the Sharingan has all those special powers, and then even more special ones after evolving to the Rinnegan? Well the Byakugan can do that too, making the Tenseigan. And apparently, it grants the user the ability to use the Tenseigan Chakra Mode. About nine page-turns into the booklet, you can see it and the chakra mode on Toneri's page. He gained it by taking Hanabi's Byakugan (more eye-snatching shenanigans) and using them as his own.
What I'm trying to get around to is, this introduces a new balance to those who've gone down the Byakugan path. Don't know the full details of what specific powers this mode grants, but it's enough to go toe to toe with Naruto's Nine-tails Chakra Mode in terms of power. This chart I've made below (and the Tenseigan svg/png, as according to how it appears in the databook) ought to help in understanding what the evolution curve is.
I went and named the specific chakra the Tensei Chakra, as opposed to the Six Paths chakra that forms when Uchiha and Senju chakra become mixed. (There's also the Six Paths Sage Chakra that forms when you mix in some Natural Energy, but that's a fork in the road decision we usually have people make, in choosing between Rinnegan or Sage Mode.)
So why exactly did I bring this all up? Like I said before, this could be a power-up and new path for Hyuuga/Ōtsutsukis that want to go with further special eye hacks, instead of Sage Mode. Or if they do want to go down the Sage Mode path, then they have the opportunity to utilize the Tensei Sage Chakra, just as there is the Six Paths Sage Chakra. It's just a suggestion, even if we don't know the full abilities of the Tenseigan yet.