I don't see why people believe SM Hashirama could beat that version of Naruto.
BSM Naruto was already very fast as shown in his BM and it was only with Half Kurama. Now with Full Kurama -> more chakra he should be even faster especially his sunshin.
Full Kurama shot barage of TBB(small I could say) and along with PS swords it was able to destroy Buddha arms.
Now considering Naruto could use TBBFRS and as perfect jin > bijuu it is likely to posses even more destructive power to damage even more buddha or destroy it. Wood golem is no factor when Naruto is so fast and also has such destructive power, so useless would be wood dragon, creating Forest, roots.
About RG SM Madara, I think without Gedo Mazou Full Kurama BSM Naruto wins this med diff, as he is much faster then Madara and has great fire power. Yeah I know Madara can use Preta Path along with his body asborbtions jutsu to absorb attack. However Army of clones blitzing around would be hell trouble for that Madara. Madara's limbo shouldn't be able to keep up and he it can not save him from all sides.
With Gedo Mazou, Madara takes this rather unless Naruto will keep blitzing and avoiding while trying to destroy Gedo Mazou with TBBFRS. Madara's PS is no factor. Besides Madara's limbo was such strong when used as Jin Madara, before it just blown away bijuu but could it distract Full Kurama BSM Naruto enough... I doubt it.
Against v1 Juubito, it is very tough battle as he was very fast, posses insane regeneration and also TSB. The only Naruto chance would be ganging up on him with army of clones trying to takes out him with TBBFRS... or chakra arms + Frog Katas but I think Juubito v1 wins more time then loose.
Against Juubito v2 -> He beats Naruto no-low diff,
8th Gate Gai no diff.
Jin Madara neg diff
IMO TBBFRS would have fire power comparable to TBB with PS's swords or even higher