Looking at the mod I only ever use Summon Luggage and Summon Pickaxe. It annoys me a bit that theres no weight limit on the Luggage either (keeping track of the 500 Ib limit I set on it can be a pain at times.)
Everything else doesn't scale altogether that well, or doesn't work with mods that do attempt to scale spells. It hasn't been updated in a very long time, I'm assuming Xilver mothballed it.
I've been debating on just removing it from the list and hoping that whomever does Apocalypse Spell Package adds a pickaxe summon spell.