That was my first thought as well
Sunbolt as a free SLA seems crazy strong - a light beam-AOE attack with decent base damage, and free metas? But the only way, apparently, you'll get it (unless they make Amau available to all divines to follow) is by reincarnating a Morninglord (or PDK?).
That seems like an awfully byzantine way to require access to any given skill. Why even bother locking the first-level class on Iconics if you're going to put something in game that REQUIRES you to overwrite that class?
And yeah, the capstones require Favored By..., so you cant jump deities

Otherwise, hell, why would you ever take Searing Light when you could have Sunbolt? Being able to spam CLW with full free metas is the only other option there that might compete.