[Autumn]

Given that healing is generally restricted to FAI or is only stat-less when tied to conditional means, I think Radiant Solace not being converted is quite fine, additionally I don't think Holy Shield should really be changed, not even due to current discussions around the skill, but because these kinds of passives don't tend to actually change how stats and elemental domains interact with their own class, Priest's Blackened Faith comes to mind as a perfectly equivalent example, as it would not change how Devocation works

A lot of the other things related to light -> lightning ATK conversions I do agree with completely though. I am iffy on Light on High, given that its a resistance shred and not a pierce, this could get exceptionally nasty with Soaked and Idol, as lightning always has done in the past, but like Divine Judgement and Blackened faith, it only makes sense that it would shred the resistance I guess.