No, it isn't easy to implement, if I implement something like that it will be a paid add on feature similar in some ways to form wizard pro except for the presentation of the data and the different data types that might be supported.

Best,

Joe

Yes, much like form wizard, the data would be stored in rows not one column per field since the fields are arbitrary user choices, we would not be adding real columns to a database table corresponding to user column choices, but we would present it in the UI as if the data was stored in a table with those columns.