This idea could explain why Kal and Ishi's powers apears to have temporal effect and how a Truthwatcher managed to see the future a millennia before the first Enlighten truespren.
As I just said, temporal effect helping locating your ennemies
Gravitation may pull object together but it also make them crash together, which I think falls well inside the "hate unites" idea I gave earlier.
Also I'd argue that the Shanay-im are more Valorous than Honourable
I think some fused talked about making one's passions grow
Illumination is not about hiding things, it's about making the other see what you want them to see which is very Odium-like. Also as I mentioned there was a Truthwatcher seeing the future around the Recrence and even if I don't think the visions are pure Illumination (and appear to be the only one thinking that) I do think they require Illumination
I'm more seeing him as neutral toward change
I don't see how this would matter, Odium is about central symmetry so if we use geometric considerations we should focus on Transformation and Cohesion
Geometrically it's the Surge that makes the most sense for Odium's truest, that way the Odium-Honour is vertically symmetric (Honour's symmetry) the Honour-Cultivation one is vertical symmetric (most likely Cultivation's symmetry) and the Cultivation-Odium one is centrally symmetric (Odium's symmetry)
Spiritual Tension appears to be able to weaken people's Identity (cf "Journey before Destination you bastard"), which kind of Odiumy