Lingots for sentences
I think that we should get extra lingots for a certain amount of sentences solved in a day(one lingot for forty sentences, for example), since lingots are meant to encourage the practice of our skills.
Where does it state that lngots are meant to encourage practice? Lingots are used to buy choices from the store, but most of the items are quite useless in itself. Desire is what is used for encouragement, not useless money that the creators made.