There also seems to be a consistent lag between achieving a title and its congratulation message popping up. I don't know if this is intended or not, but I almost always (probably always, but I'm not constantly looking) see the new titles below my name, and only a few flashcards later does the message pop up.
EDIT: Additionally, ran in gold trouble for the first time. Think choosing the cheapest building available got me out of it, for now. Perhaps you can remove some of the gold income inconsistency by making the "failed card" award smaller (from 4 to 2) and increasing the "correct" award (6 to 8)? At this point, getting every card correct without any mistakes brings only 60% of the gold one would get by mistaking each card once and then guessing it once (quite likely to happen, since some cards get failed more than once in a single day), which looks like a big difference. The "reward" for mistaking a card is a great idea, it keeps me motivated to keep it up even on desks where I mistake 75% of the cards, but it seems way too close to the value of a correct answer, as opposed to being a more marginal consolation prize.
EDIT: Additionally, ran in gold trouble for the first time. Think choosing the cheapest building available got me out of it, for now. Perhaps you can remove some of the gold income inconsistency by making the "failed card" award smaller (from 4 to 2) and increasing the "correct" award (6 to 8)? At this point, getting every card correct without any mistakes brings only 60% of the gold one would get by mistaking each card once and then guessing it once (quite likely to happen, since some cards get failed more than once in a single day), which looks like a big difference. The "reward" for mistaking a card is a great idea, it keeps me motivated to keep it up even on desks where I mistake 75% of the cards, but it seems way too close to the value of a correct answer, as opposed to being a more marginal consolation prize.
Edited: 2012-03-24, 2:32 am