We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
Curious. How exactly would this work? Would quizzes still work exactly the same... you type in the questions with [FIELDTYPE] and the quizzes would use the fields system (and if so, would it still support only the fields it does now, or would it support any field types that the fields system supports)? Or would making questions work differently and allow for choosing field types on a per question basis (similar UI to adding fields for a catalogue for example)?
It could be done this simple way.