Fair, but the argument is that the Apocryphal Curse will care about hatefulness! In Ruler and Vassal, hatefulness is modestly reduced, in Let it Rest, hatefulness is massively reduced!
Agreed! But the point you made was that in terms of personal power, we can make 5 Arete rather easily! 7 Arete isn't a far stretch past that, and I am personally indifferent to the breakpoint Rihaku presents. Beyond that, the Gisena progression point is fair, but unclear in terms of relevancy given the existing ways we have to buff her (we can probably pursue RW, Coalescence, PW, bloodbuffs, Undying Vanguard, Rains, etc.)
I think saying Rank 7 is whatever is a bit disingenuous! It'll attract beasts to harvest picks from, massively increase Versch's relevancy in battle, and bring it to a degree of power at least comparable to our own!
Here are some words from Rihaku: "Higher Ranks mean quicker travel time, stronger Astral Beasts and a more useful mech overall. Rank >5 enables Totality control method and potential access to more information."
This is last point is fair, but again, it's unclear how much more relevant these are compared to other boni! Why care about the breakpoint when we can just farm its equivalent in other advancements?