Well, I think that what we need is a Spell Quickref sheet, listing spells by Path and path level reqs, maybe with a split between mono-path "pure" spells and multipath ones, for example
Pure Fire
Fire-1
Fire-2
...
Multipath Fire
Fire1 Air1
Fire1 Air2
...
It's not that difficult, but undoubtely time-consuming. If ever IW would be kind enough to "publish" the spell manual/descriptions in digital Version it'll be of great help
.