Okay, I can't find my notes, so I'll see what I can recreate from memory.
The spell list should focus on adaptation -- adapting to the environment, and adapting the environment to you. So spells that grant temporary skill bonuses or weapon proficiencies are a good start, as are spells that create/help create buildings or otherwise reshape the world around you.
At the same time, those spells that adapt you to your environment should be of the sort that help you adapt and overcome your environment. Endure Elements rather than Comprehend Languages, for instance. Ironically, some of the spells that best suit this mandate are druid spells -- Wood Shape, Stone Shape, Soften Earth & Stone, even Repel Vermin.