If you scale Touma to 5B, or whatever rating the MGs, Anna, etc end after this CRT, it will scale to literally everyone in the verse, from Kanzaki and Acqua to Terra and even Kihara Amata.
This really just doesn't work, you noted in the OP that Silvia turned him into a dark red mass and you still want to scale Touma to her level or even above? Do you at least know the difference between endurance and durability?
Okay, waht are you talking about? I was only ever talked about a possibly at most rating for whatever rating that the high tier/saint tier people have, and even then, it would be a highly downscaled version of it that would be made very apparent that while he would be "at" that level, he would still belong to a category that is below them. The only 5-B that Touma harmed was Anna, whose durability is questionable (and whose stats is suffering the same way Alice are cuz GT is just starting and we have no idea on how to fully scale them just yet as they have showed off little to nothing - but that is a writing problem from Kamachi's problem of introducing new characters and bigger and stronger baddies without truly showing off what means them stronger than previous threats, and also a scaling problem... but that is off-topic), to say the least.
Yes, and Silvia only turned him into a dark red mass after an entirely off-screen beating that we don't know the exact length of; and was entirely capable of standing up and moving after Ollerus came to save them, and could fight Thor and suffer another painful beating from him due to Almighty Thor; and he could still move good enough to evade all of Othinus' arrows even after that, meaning, Touma's durability could shrug off Silvia's beating to a degree and he could endure the injuries.
And the entire foundation of this "scaling" stems AP-wise from Touma being able to punch Black Wing Accelerator with no issue in WWIII and knock out White Wing Accelerator with a rock strike to the heart - we both know that Accelerator gets constantly powered up by his wings to have better durability via his wings flowing its energy throughout his body, Touma couldn't fully negate Accelerator's wings nor any constant power source, and, well, he could punch him without issue; Thor likely has a similar deal going on with Mjolnir based on the few things we know about that mode of his, and Touma's right hand, and thus his body, could withstand the force that broke Thor's wrists. We also know that both Touma and Accelerator can take hits from Dark Matter wings without much issue.
Truth be told, however, I did get hasty from Doggo's sudden approval of this idea.
Let me go through these 4 feats really quickly:
MGs' surface feat: doesn't scale to saint level
Fiamma's surface feat: you sure he'd destroy the whole surface and not just Eurasia?
Fiamma's ocean feat: doesn't scale to saint level
Aleister's feat: doesn't scale to saint level
Ye, ye.
MG: Why are you even mentioning that feat? Of course anything the magic gods do doesn't scale to Saint level; it was only added for supporting evidence for them.
Fiamma #1: Yes. It was specially mentioned that a ridiculously huge explosion will spread across the surface and it could easily destroy all of human civilization - Fiamma affirmed and then added on that at least the entire continent of Eurasia would be enveloped by his attack.
Fiamma #2: Supporting evidence for Fiamma's High 6-A rating, essentially. And because it was only stated he could do that after he was being heavily weakened by his plan falling apart and then Touma pissed Fiamma off a bit too much to do his explosion thingy.
Aleister: It was specifically mentioned that her Son of God, during the end of it, while it had already build up her purified body to a higher level. that there was some build-up to take on the wounds "he" had received when "he" was crucified for Aleister to ascend, so to speak, meaning it was likely that she wasn't entirely at the level of the top tiers just yet.
Yes, "he" is Jesus and I had no idea on how to bring him up other than here.
Although, truth be told, I am warming up to your idea of 6-B rating, and we can back it up by Accelerator and Hyouka getting hit by at least one sweep arrow/meteor/whatever it is.
Now you're trying to get every single mid tier in the verse to solar system level...
Like, don't you see any problem with the strongest spell of a character being half-planet level when they are supposed to be solar system with every single punch?
Again, just because a verse has a UES doesn't mean you can scale absolutely every feat to everyone without having any support, that's not how it works, we'd have everyone in JJK at 5A by this point if we went by that route.
Also, there are other spells that are a more direct version of reality warping, Thor for example has a earth-exclusive version of Astro in Hand and it doesn't give him planet level stats, you know.
You and I know both know that I was pointing it out that Misha put more "effort" into casting Sweep than into any of her "Astro in Hand" feats, i.e, she actually had to "charge" while she just had to "blink" her eyes, and not specifically trying to scale them to that level.
Thor's spell also specifically doesn't have any offensive power in the slightest; it is just a spell that moves him to a spot where he would win, nothing more, nothing less. I've repeated checked and it wasn't stated anywhere that it could do damage, essentially, it is a souped-up version of Awaki's teleporting but from the "magic side" - and is more akin to Accelerator's galaxy shaking feat or Kimi's black hole creation than anything else.
And sides, DT regarding UES has commented. And well, ye. What he said was convincing.