I feel like Naruto wont just get a powerup to his abilities but he'll also gain a new sense of focus. I notice the frog statues sitting in a meditation posture. Fukusama talks about sensing nature's energy and becoming one with the earth. And in terms of etymology I see senjutsu as being like a "zen jutsu". I dont see these as loose correlations and it would be logical that Naruto gains strengthened awareness a la yoga masters, shaolin monks, tai chi practioners, etc. That would be a cool way to go about things although the "you gotta die" line does worry me that Kishi will take the easy way out of giving Naruto his powerup.