In regards to OP topic, I wouldn't mind if we did have to train or purchase the scrolls, BUT...

I harken back to FFXI English launch days and must say, if it's an ability expected of us, but it comes as a random drop from the boss of a higher rank dungeon or a world drop that is sold for crazy amounts of gil in the Wards, I would have to be against it (I'm looking at you Erase spell!).

But if it's closer to the way we purchase abilities using Guild Marks, sure! Was kinda hoping for an accrue JP and buy new abilities system anyway.