Fail, Hagoromo's chakra is the same as Indra + Asura chakras mixed. Mangafact!
Again fail. Madara was only capable of absorbing hashirama's SM because he was modified by kabuto. Madara had freaking hashirama's face on his chest, also note when he absorbed the natural energy his hashiboob got the SM markings.
Uchiha's don't have the proper bodies to naturally hold large amounts of Natural energy, they must be modified or juubi jin. The fact you think sasuke could absorb RSM, the most divine/haxxed SM is beyond me.