Once I finish the task of artist qualifiers, I plan to take a look at museums. Here's a general overview.
I. Allow museums to be grouped.
We need a way to put many locations/museums into a larger group, such as the Berlin State Museums (http://en.wikipedia.org/wiki/Berlin_State_Museums), or the UK National Trust. This means pages to create museum groups, pages to add museums into groups, adding museum groups to search, and thinking about how museum groups might be displayed in list pages.
II. Add more names for museums
At the least, I think we need to change museum/location names to allow "Name in the local language" and "Name in English". While we're at it, we should consider having some sorting names too, so that the Musée d'Orsay could be have the following:
Local name: Musée d'Orsay
Name in English: Museum of Orsay
Sorting name (English only?): Orsay, Museum of
Clearly there's a bit of work there. Also, we have again the question we'll have everywhere we create multiple names or aliases - do we enter the museum more than once in lists, under each name?
That's my current thinking, and hopefully I will get to it soon.