Met with LB, got some feedback:
A few labels will be renamed
The view field can probably be incorporated in to the notes field.
The period field *might* be more useful if we split it in two - a date filed, for when the inputer is confidant that the date is 135AD. This field can be empty. The other field is a list of *all* acceptable ranges (Bronze, Hellenistic etc. along with a year range for each e.g. 1450-1680).
I said I would send along a list of all entries in the period field.