Ah, ok, I see.  And as a player increases in level, as long as he increases that spellcasting skill, he could more easily achieve the higher numbers, thus giving him more Boon Points.  Ok, thanks, that eases my mind a bit. 

My vote is to keep it at +5/-5.  It accentuates and really tells you your races strong and weak points and adds flavor to your character.

I made a linguist character for the campaign I'm playing.  I wanted to be the diplomat of our group and languages happen to be a good start in addition to my nice influence roll.

Characters may learn, by purchasing the appropriate Talents,
additional languages. They may know a maximum number of
languages equal to 5+ their Intelligence Stat Bonus.

With the above statement and at a max intelligence of 20 I can learn a maximum of 8 languages.  While that is a lot based on the languages listed in the book, I understand that there are a lot of other languages that may be added to the system, and the GM in my group has already added a few.  I have learned all the languages I can (according to above rule). 

Could a talent or some other option be made available to allow someone to learn languages in addition to those allowed by the 5+int bonus?

I looked and didn't see any statement telling me I couldn't save them up, but I didn't see it telling me I could either.  I apologize if I missed it, but I would like clarification.