@ rdanhenry
I always looked upon the spells of semi spell users as abilities or extra set of skills for that profession. Most of them are pretty close to the character and they mimic, although some in the extreme, skills from the normal world.
So when Aragorn is looks for a path he isn't chanting to the gods, he just sets out in to the wilderness, performs a so-called ritual search and Eru (his god) grants him to find the route to that place, if he is looking for it in the right direction and expends 5 PP.
The bard sings and his/ her mind focuses on the song, while captivating one or two from the audience with his/ her eyes, making them forget everything around them. 4 and 2 PP over 2 rounds would be the cost.
The Dabbler begins to creep and move slowly as he uses his stealth to stay out of the hands of his pursuers. His steps are cloaked in silence from now on, and he writes off 4 PP.
This is not true for all spells (especially the paladin lists have some supernatural stuff happening).
It is just how the world reacts to these effects and how the player likes to implement them.
Lastly I would like to say something on the ranger's behalf since that would on topic. It is not a weak class, just because it doesn't have any of the other semi spell users' attack lists. It has so many other cool things going for it, as long as he is in the wilderness. He is more like a Swiss army knife than a sword. More of a hunting rifle than a SAW249. As long as the party is in the wilderness he is their Ray Mears, but this goes for other classes as well. The Paladin is also just fighter when not fighting Demons, the Dabbler without things to break in is just another guy who used up a lot of DevP on useless spells.
It is just that fighting Demons and Opening treasure chests is seen as a more powerful build, but a good GM will make a party suffer for disdaining a ranger by making them cross vast plains or forests.