Susano would still be wielding Deva, and implicatively speaking, Deva will be lethal in a Rikduo's chakra wielder.
Deva will be stronger, nothing implies it'd be lethal if used against Naruto, and Susanoo wielding it isn't going to make it any stronger.
Not to mention BT>Susano sword will be difficult to deal with for Naruto
Not really. He counters it the same way he did against Nagato, by holding onto something, or he just fires a few Bijuu Dama right into Susanoo, and they both take damage. Not to mention a Susanoo sword strike isn't even going to cut through a tail, at least not a single strike.
Naruto would have to deal with massive scale ST's along with the PS shockwave follow ups. It's too much imo.
Massive Scale Shinra Tensei are going to push him back, PS shockwave isn't doing anything to him, not when it took multiple direct hits to actually cut a single tail off. Direct hit>>>Non direct hit.
Yes, Asura would be powerful, very powerful. It was making massive explosion in Konoha from 1/6th of nigh dead Nagato with a normal sized hand. Amplify that by Sasuke's Rikduo chakra and his PS's hand size and you have insanely large attacks. Not to mention the fact that he can use these ballistic weapons simultaneously with his own PS.
And Sasuke casually cuts rocks the size of the Shinju's root. Rocks that dwarf Mountain Ranges when cut apart, and its a cutting attack to boot. Asura isn't going to be anything impressive, at least when compared to Sasuke's Bijuu PS.
Not to mention everything getting a boost anywhere near the boost that his Susanoo got is nothing but an assumption, an incorrect one at that given Sasuke's Katon is not any different from before he got Rikudo's Power.
Based on what? He can store the chakra he abosrbs inside the Susano similarly to how he absorbed the Bijuu's chakra into his Susano. If the Susano is using the Preta barrier, it won't necessarily be abosrbing its own chakra back into Sasuke, since Sasuke isn't the one who is using it, but rather the chakra entity--Susano. I would agree that if Sasuke was the one using Preta from the diamond, he would absorb the Susano's chakra, but the Susano using it is a different topic. It's pretty much the equivalent of claiming Preta should be absorbing the chakra in his eyes and own body, affecting it, but that's not the case here.
Susanoo is made of chakra, Preta spins the chakra flow in reverse, causing chakra to be absorbed. Even if Susanoo can use Preta Path, it'd end up absorbing itself, since its pure chakra. Its not the equivalent of saying Preta should be absorbing the chakra in his eyes and body, because the chakra flow in Sasuke spins in reverse, but Sasuke's body itself isn't made of chakra like Susanoo's is. Susanoo doesn't even have a chakra flow to spin in reverse let alone use Preta Path. Its just made of pure chakra, not a system like the human body.
That's also assuming this all possible, cause as far as I'm concerned, there is little evidence supporting your stance.
It's not an assumption. He has utilised his Dojutsu and base Jutsu through his Susano, and has applied his own Rinnegan to amplify his PS when IT was used. Thus Rinnegan is applicable to PS as there's 0 reason to believe otherwise.
He applied Chidori to his Susanoo, and he was only able to apply other Raiton Jutsu, like Chidori Senbon, AFTER getting the Bijuu's chakra, even though by your logic, he'd be able to do that regardless of the power buff, even though the manga makes it perfectly clear that this line of thinking is wrong.
Susanoo is created with his eyes, his eye gives him immunity to IT so there is no reason that the extension of his chakra created from his eyes wouldn't get that same immunity. His Susanoo being immune to IT because of his Rinnegan isn't proof that Sasuke can use every single Rinnegan technique through his Susanoo, nor is there any evidence of them getting this large boost that you think that they will get. Will they get a boost? Of course. Will it be comparable to the boost from his old Susanoo to his new one? Nope.
No, it doesn't mean that. Madara was supposedly invincible after he received Rinnegan, not EMS. A fully mastered Rinnegan is learning all aspects of the Rinnegan. This ranges from using Bansho tenin to pull meteors from space to absorbing the chakra of all Bijuu's. It is in no way overrated, maybe by some, but people just don't seem to understand the advantages the Rinnegan gives, like absolute insight (Rinnegan lets you see anything, including Tenketsu), it's shared vision, granting you all 7 elements, control over gravity, control over chakra, control over your own body, control over life and death, being able to use Space time ninjutsu, etc. Yes, the Rinnegan gives you a greater array of jutsu, EMS gives you one amazing jutsu. However, in Sasuke's case, he can apply this array of jutsu to his 'trump' reaching a new level of excellence. And even then, I highly doubt Madara has absolute mastery over his Rinnegan. Rinnegan simply didn't receive as much panel time as MS and EMS, otherwise we definitely would've seen it in its own league (still is).
Madara w/ the Juubi's powers along with both of his eyes was considered invincible by Obito.
