Wanted to make this response sooner, but....life and procrastination.
Well, I could also go over the
multiple times Arceus puts characters to the test in terms of if they're worthy of staying around and the like, if Arceus was omniscient it'd at least be implied that Arceus knew in advance and is merely playing along for an expected result, which doesn't help
with the setting having no set fate either.
With the way the canon-unsplit went, the manga isn't really a secondary canon, or well, it's one as much as basically nearly every single piece of media of the series is (down to each game), in relative terms to each other, by being an individual universe strictly speaking,
given the cosmology uses MWI, especially as the manga is directly brought up in relation to the games and the anime as noted in the doc linked in the canon-unsplit thread.
Well, as I did say prior, the Omniscient vs Nigh Omniscient aspect of this discussion isn't something im mainly concerned with, im just not a fan of the arguments in particular that are being used to argue against the former. Regarding Arceus testing the characters, the thing is, even if we take that information at face value, what would be stopping us from claiming Arceus could've known in advance and played along with however the character's choices and decisions reached the given result?
Not only that, and not to play the "whataboutism" card, but there have been prior characters in other verses whom have had their Omniscience called into question before because of arguments like testing the characters over results they should have known beforehand, yet still keep their Omniscience despite that. A perfect example being
The Truth from Fullmetal Alchemist.
If im reading this page correctly, characters are able to be accepted for inheriting verse powers and whatnot if having criteria of being stated to have other powers, embodying all existence beyond ordinary omnipresence, etc etc.
Given that Arceus pretty much several pieces of evidence of encompassing literally everything within the Pokemon cosmology, having the essence of all creation via the Legend Plate, Pokemon types and powers originating from the plates and vice versa being shared among all Pokemon, has shown to directly use powers from creations like the Creation trio, can create Pokemon, including multiple versions of the Creation trio and even "Another Arceus" avatar to be pitted against your Arceus, etc etc., id confidently say that Arceus should fit within the power inheritance criteria.
Well, going over more than the present seems assumptive, especially if we're going to disregard anti-feats that happen so often they are basically ironically the consistent portrayal of the character, namely Arceus having to be reminded of a time traveling incident that should've fully retroactively happened by the time Ash and others returned to the present.
The first point I disagree with. It's not really assumptive when Dialga's precise knowledge of exact events, when and where to send Ash and the group to, and knowing when they finish up (including Sheena telepathically requesting Dialga in Ash's timepoint, from the past, to send them back
further into the past and Dialga immediately doing that before they get killed, or when Arceus calmed down in the past and Dialga immediately teleported them back to the future) is pretty explicit that it's awareness goes beyond the present when viewing time.
As for the anti-feat point, it's not really disregarding. It was already mentioned, and confirmed from the creator(s) that Jewel of Life purposely depowered Arceus in order for the movie's events to make sense, so that makes a pretty strong statement that Arceus's shortcomings,
especially from when he doesn't have all of his plates, can be safely disregarded for it not being a legitimate portrayal to consider.
Also I'd avoid scaling arguments for something like this as generally
that kind of scaling isn't allowed for this without more explicit statements.
The problem however is that this isn't really scaling. At least not in the way you're interpreting it to be. This isn't upscaling hax or has resistance, it's I guess upscaling abstraction / state of being between them (if you want to call it that). In other words, when I said Arceuss is > Dialga, it's to say Arceus has superior abstraction to Dialga. Dialga being time itself while Arceus is literally everything, and if Dialga has the awareness to know X thanks to his Y state of existence, him being time, then the latter who has a much superior state of existence for including time itself and other concepts as part of what Arceus encompasses should mean its knowledge and awareness is superior.
You mean
this? Not much else than that is really brought up in the OP, and the argument outside of the plates relying on the semantic of the setting being a part of Arceus's being would fall on the highlighted issue said before regarding
Omnipresence being unusable to inherit abilities in this way, as it's extremely misleading to say the least.
I commented about this already, so I'll just say see further above for this.
Well, that's really just the broad element, here we are talking about way more complex techniques reliant on physiology and dexterity as well (to which something like this would need way more stuff to confirm over glorified assumptions), and additionally the capabilities of a type don't increase linearly based on stats, in fact fully evolved species often learn less moves than their pre-evolved form (and often later on at that), especially when factoring in egg moves. A CRT of its own would be required for the implications this'd have outside Arceus to say the least.
I'll hold off on this for now.
I don't recall, but how useful that'd be for this purpose could vary, as this could also talk about raw stats than that kind of versatility.
Well given that it would say
powers, pluralized, it would be referring to abilities rather than raw stats in an unpluralized way. But this is assuming this infinite powers thing is, well, a thing, I vaguely recall Sniper mentioning that at some point when he was here, so I could be misremembering or whatnot.