Probably, I think he has rinnigen only because of the other 7 jinjurikis and their rinagon, they could all see what each other see, so he needed that to be safe, plus rinnigan helps in his control over the 10 tailed statue but nah, he would RAPE with both MS eyes.
Re: Discussion: Would an Obito w/ both his MS be stronger than a Rinnegan & MS Obito?
Probably! Unless the Rinnegan's Preta Path could absorb Kamui...
Assuming Obito had his Senju DNA (for the eyes), and both Kamui's, then he would probably be far stronger! Able to sit in his realm and then move people into it from long range....it would be like a heavily fortified cannon so to speak.
Re: Discussion: Would an Obito w/ both his MS be stronger than a Rinnegan & MS Obito?
I think he would be stronger wit both his MS because then he would unlock the full powers of it which also makes me believe that Kakashi will get the other one and be the first completely blind folded OP shinobi