1 Tier SLAs
Chile Touch: ML 5, Touch.
Nimbus of Light: NO ML, Ranged.
3 Tier SLAs
Necrotic Bolt: no ML but... no metamagic... what?
Searing Light: ML 10, can be with metamagic. I'd like to use this than Necrotic Bolt even if it has ML.
4 Tier SLAs
Negative Burst: not really bad... but It's something bad still. You should apporach enemies to use this... ok, ok. It's better than Unholy Blight surely.
Holy Smite: lots in the game are evil and it works well... even if alignment type spells are suck, but better than Darkness.
5 Tier SLAs
Mass, Inflict moderate: It has similar damage with Negative Burst.
Flame Strike: ML 15, but It's 1.5 times powerful than Inflict above.
6 New Spells
Enervation: I'm not sure about this.
Sun Bolt: no need to say!
12 New Spells
Necrotic Ray: most good in the darkness.
Sun Beam: a bit weak than Necrotic Ray, but We have lots good already.
18 New Spells
Power word stun: who uses this?
Sunburst: good for enemies, much good for ooze and undead!
If this released with these, nobody would use darkness.