With the whole Sakura power up theroy, someone did make an unusual theory of sakura getting some type of sage powerup even from Hashirama, and while it is strange in this theory that it could be a slug sage mode or the one Hashirama used, one thing made me think after watching the current dubs of shippuden,
It was in one of the sage training episodes and lord fukasaku said this, "Only those with unique or strong chakras can be sages."
Look at who were sages: Naruto, Jiriaya, Hashirama, and Kabuto. Kabuto mastered it because he incorporated not only Orchimaru's techniques into his body, but also the water shifting powers of Sugiestsus clan and the sensory powers of Karin, along with the powers of the sound 4.
Sakura I don't see becoming a sage, I mean it can always be something to come, but I just think its more realistic if Sakura got the milotic regeneration and then the strength of 100. Sakura's chakra enhanced strength lets her deal physical blows at least 10X the normal amount of one man. Give her the strength of 100 with the enchanced chakra, thats a 300X strong one woman army now is that powerful or what?
I find this ability:

and this one especially:

within Sakura's realm, I mean they are more or less the mastery powers of her medical and chakra enhanced strength, they give Sakura the power she could need to be one of the strongest like around Kakashi or Gaara's level, maybe a little more or less,
Sakura could use it in a bit of a better way given her perfect control but the point is, this is strong enough that she could help in the final battle in some role such as helping fight Madara's susanno army or something like that, if Sakura could end up around a reasonable power range like to Kakashi or Gaara, able to at least fight once in the big league basically that would be fineThe idea I see with this is that we first saw sage mode when Jiraya fought pain and Jiriaya died, Kishi did not let the sage stuff end there, he made naruto into one, I think it would be a bit of a shortcoming to see an awesome technique or basically tsunades max power and she only uses it to fail and die, why not let this power be around longer? It can be given to Sakura via finger transfer, its cheap but thats how Itachi gave his occular powers amaterasu and tsuyomki to Sasuke, a simple finger contact. If Itachi can do it, don't be surprised if Tsunade could do it, hell it may be an asspull in some sense but do you see any other realistic way for Sakura to get a boost this late without? Tsunade may die, this is why the powerup can come, I just still find it hard for any senju power to come to Sakura, if anyone could deal with a senju powerup it would be Yamato but he is MIA and stuck in a tree (literally), unless Sakura actually runs into edo Hashirama and sees them both and how Sakura was Tsunade's student, maybe but even then its going to be hard for Sakura to just get a free handout from one guy who died long ago, unless Tsunade really really advocates and manages to persuade her grandfather, then maybe it could be given to Sakura as a way to continue the Senju power? I don't know but the power up has more potential and sense with Tsunade than Hashirama but I can only see Hashirama giving it to Sakura for being Tsunade's apprentice and carrying her wisdom with her that may be enough approval for Hashirama, but if anything I think this is the most possible.I see this as being much more likely:

than this as many would want: