I have few things to say sonny-
1. You said Minato is a sensor, with which I disagree, how??
A) In your pic where Tobirama touches ground, the other guy who does it is that fodder from other village, observe what he says "Is he alone?", here 'he' is Minato, that proof itself is wrong.
B) Why Minato sensed Kyuubi's chakra??
Because he had Kyuubi's other half of chakra sealed within himself...:yeah:
2. Minato's shared similarity with Rikudou Senin
A) First of all your theory stating that Minato separated Yin-Yang using some Kekei-genkai is clearly wrong, as Minato never separated Yin Kurama and Yang Kurama on purpose, it was just death reaper seal, I think it happened because of the basic concept of Yin-Yang.
B) Minato is child of prophecy, yes because he saved entire shinobi alliance from bijuudama and konoha from Kyuubi.
3. Senju clan thing
A) Chakra clock of that younger son isn't due to bijuu or Kyuubi, but due to he being senju, does I have any proof?? Yes I do have, lets take you back to Hashirama vs Madara, fight when Hashirama used that Shisuusenju thing it deflected stones and sand around him, the same thing happened when Madara released chakra in front of Orochimaru, so it has nothing to do with Kyuubi..Now why Kyuubi?? Because Minato got that chakra cloack due to Kyuubi, but that guy(son of SO6P) wasn't Kyuubi jinchuriki.
B) Obito thing-
Obito wanted to compare Sasuke and Naruto with Madara and Hashirama(Uchiha and Senju), that's why he said Sasuke and Naruto, i.e. Uchiha, and clan related to senju(uzumaki).
I know it was quite lengthy, but I hope you understand....