This is a Q&A section and its sole purpose is to scratch some itchy parts some readers might have felt. Feel free to skip this chapter if you are not interested.

Q1. Technically, Muramasa EMIYA can actually Trace Divine Constructs now.

Ans. Yes, actually, I agree with you lol. The thing is,
1: It would take an absolutely HUGE toll on Muramasa/Emiya's body and core if they were to copy a divine weapon of another, so it's not something they can use lightly.
2: From a meta point of view, it just doesn't sit well with me Muramasa whipping out Excalibur Katana ver. or something like that. XD

Q2. Tsumukari Muramasa's shards being a catalyst is not viable, the sword should've never been broken in the first place, ever.

Ans. Yes. Why did I use the phrase 'shard' then? I wanted to imply how Muramasa/Emiya shouldn't be in this world as the counter-force, in a sort of 'dimensional paradox' kind of way. Why? As ALAYA said earlier, this world is about to be pruned. In other words, this parallel world is ALREADY DEAD to humanity.
Why? That is the hidden plot!

Q3. This might not be that important, but I still feel the need to point out that the spear Karna uses from his Anti-Country Brahmastra Kundala is not a divine construct, and thus can be Traced and used much easier, but this brings me to another problematic point.

Ans. Technically, yes, it should be easier. However, there's one big problem. Emiya/Muramasa specialize in swords/katanas. Soooooo, yeah, they'll be like: 'It's not worth the cost. I've got other 'replacements' in my arsenal.', lol. Besides, the weapon has a hell lot of divinity at the very least.

Q4. Many of these servants are simply not viable in a Holy Grail War.

Ans. Of course! I completely agree with you lmao. That's exactly the point! The thing is (great hint): the masters are NOT the ones supplying mana for the servants. Except Artoria and Caren. Yes, it has something to do with the hidden plot.

Q5. Muramasa isn't actually the weakest of these servants, Heracles is.

Ans. He would be, if Hercules is the Fate/stay night or FGO ver. ...Alas, he is a Fate/strange fake HYBRID! MUHAHAHAHA!

Q6. Having The First Hassan here is also honestly a bad idea. He's too OP.

Ans. I agree! However, there's this: Hassan has no interest in actively beheading anyone if the target isn't 'unworthy'. Add the fact that Caren has no special interest in the grail and you kinda see where this is going.

Q7. One thing I absolutely hate right now about this, Arotria's Mystic Eyes of Death Perception. Would there be any change of plans?

Ans. Really sorry to disappoint you, but that's actually essential in the long run. I'm not gonna deny I thought 'this will look badass on Artoria', though that wasn't my main reason. If you have any suggestions I'm welcome. I'm letting her keep her eyes though lol.

Q8. We still don't know whether Arthur is stronger than Artoria

I am pretty there was something Nasu said about Arthur being stronger than Artoria, in some kind of interview. The prototype was supposed to be more 'MC' or something like that.
Soooooo, yeah, that was why I thought Arthur was more OP. Yes, I already knew the information everyone provided, so no worries.

Q9. I hope you have a way of overcoming Tsumukari Muramasa being a suicide attack. That would be just too predictable tbh.

Ans. Actually...(small spoiler):

When Muramasa is summoned as a normal servant with a master and NOT as the counterforce of Alaya, tracing Tsumukari does NOT kill him. Interesting, eh? The reason is...unknown, but I do have my own theory that making a connection with his master actually prevents Tsumukari from severing Muramasa's own fate.

Q10. And I have a lore-related question from there, If releasing a divine weapon kills someone who doesn't have divinity in them, then why can Artoria use Rhongomyniad? it's literally the crystallized divine authority over the layers of the world and an Anti-Ea weapon and as far as I know, Artoria only has the Fae's blessings and artificial dragon blood.

Ans. The first reason is that (I assume) Fae and dragon is something very similar to lesser gods, and the second is that Rhongominiad makes/transforms its wielder into a part of its 'anchoring' system, like a symbiotic/brainwash relationship (at least in FGO singularity).

Q11. Why is Rho Aias called Low Ajax?

Ans. Fun fact: it's the actual meaning! To elaborate, Ajax as in the Trojan hero, Low as in a lesser product via tracing. Rho Aias is just a byproduct of bad pronunciation lol.

Q12. Is 'Widowmaker' from Overwatch?

Ans. Nope, lol. Too easy to trick.

Q13. Muramasa is extremely famous, he should have the buff!

Ans. His katanas are exceedingly famous, yes. Him? Nope. Well, he is the founder of the prestigious Muramasa clan so it's not like he will get no buffs...I never said his katanas wouldn't get buffs, did I? BTW, I'm half-Japanese. I live there, so I do know who is famous among the local folk. Muramasa is NOT famous as a hero. Not at all.

Q14. There is a Grand in the current holy grail war, perhaps a threat that is much worse than a Grand is apparent on this parallel world?

Ans. Yes, definitely.

Q15. No Maiya?

Ans. (Massive hint:) She's already there. Hmm...Holy grail war...Russian...hmmm...

Q16. Are the katanas in your story real?

Ans. It depends. For example, Chigurui and Shoujyou are both from local legends and minor myths. Hound Stella? I made that up, of course! What did you expect? It's not even an Asian name lol!

This will keep adding more Q&As. Feel free to comment, but please take note that I'm not a TYPE-MOON amateur.