Right, don't have my books available and confused roots with branches. What I recalled is that there were astonishly few of them available (9 out of 15?). And they cost a ridiculous amount of build points for a junior covenant compared to really good Order-wide-desirable books (like say a Lvl 15 Q16 tome).
So consequently I never see many junior covenants start with them - which surely they should.
I proposed 5/15 'root collections' for three reasons.
- because they are much easier to write than 6/21s and there is NO excuse for any gaps
- because lvl 5 already has a significant place in the Arts framework - Magi require Level 5 in every Art to properly open the Arts of an Apprentice. Thus it seems a reasonable thing to have a Level-5-of-everything volume 'set' distributed order wide or available as the 'right' of every apprentice. Sort of Ars Britannica Encyclopedia, there's one on every covenant shelf.
- because is slightly less than min/maxed and still leaves room for the really skilled writers to have written the 'definitive' Arts Roots
The first 5th Ed saga I played in (converted from 4th Ed) saw my Writer Bonisagus librarian immediately (upon converting to 5th) embark on a project to fill this startling gap. But the more I've played since the more convinced I am that it is a glaring gap and should be better filled than the canon allows.
I would be tempted to make this 'root collection' free of build points for a starting covenant or maybe 1/10 cost (so they cost only 2bp each, or discount to 25bp for the complete set of 15) but to compensate make every Quality or Level value of other Art books that is higher than 10 be worth triple (triple the amount over 10 that is). So the extremeluy useful L15Q16 text would cost ((10+53)+(10+63))= 53 bp instead of 31. If you want those extreme books either pay through the nose or play stories for them!
This is for a spring covenant of course. A starting summer covenant may lower the extra cost for the good books to double, and an Autumn just to standard cost perhaps (just musing on the page here.
This biggest downside is that you would then expect every apprentice to start with at least 5 in more or less every Art as it will cost him just one season of reading in each year of his apprenticeship. It does take some of the flavour out of the order...
I rather suspect this is why canon is as it is, instead of what it logically should be.