Mongo multiple array values match - mongodb

Question

So I have this data model, based on a Facebook Insights API response, and you can assume is inserted as a document in a mongo collection.
My problem is:
- The representation of the Insights data from FB is not the best, with keys that potentially could contain ".", or other chars not mongo friendly.
The queries I am trying to achieve, are sorted by some of the insights values:
Get all documents ranked by "Melbourne, VIC, Australia".
Based on the problem, my question then is:
Would you recommend transforming this documents into something more mongo friendly, and making the queries simpler? or
Would you leave this model representation and work around more complex queries
At the moment of editing this question, I have transformed Insights data representation but your opinion is welcomed!
Cheers!
{
"id": "155257214638229/insights/page_fans_city/lifetime",
"name": "page_fans_city",
"period": "lifetime",
"values": [
{
"value": {
"Bogotá, Distrito Especial, Colombia": 206,
"São Paulo, Brazil": 102,
"Melbourne, VIC, Australia": 95,
"Cali, Valle del Cauca, Colombia": 76,
"Medellín, Antioquia, Colombia": 72,
"Bangalore, Karnataka, India": 39,
"Cartagena, Bolivar, Colombia": 38,
"Barranquilla, Atlantico, Colombia": 36,
"New Delhi, Delhi, India": 34,
"Ibagué, Tolima, Colombia": 32,
"Calcutta, West Bengal, India": 32,
"Bucaramanga, Santander, Colombia": 31,
"Sydney, NSW, Australia": 29,
"Mumbai, Maharashtra, India": 27,
"Lisbon, Lisboa, Portugal": 27,
"Mexico City, Distrito Federal, Mexico": 26,
"Neiva, Huila, Colombia": 23,
"Chennai, Tamil Nadu, India": 22,
"Hyderabad, Andhra Pradesh, India": 19,
"Chandigarh, India": 17,
"Pasto, Narino, Colombia": 17,
"Cúcuta, Norte de Santander, Colombia": 16,
"Santa Marta, Colombia": 16,
"Salvador, Bahia, Brazil": 16,
"Valledupar, Cesar, Colombia": 15,
"Palmira, Valle del Cauca, Colombia": 15,
"Montería, Cordoba, Colombia": 15,
"Rio de Janeiro, Brazil": 14,
"Lucknow, Uttar Pradesh, India": 14,
"Villavicencio, Meta, Colombia": 13,
"Belo Horizonte, Minas Gerais, Brazil": 13,
"Surat, Gujarat, India": 13,
"Ahmedabad, Gujarat, India": 13,
"Santiago, Region Metropolitana, Chile": 12,
"Brasília, Distrito Federal, Brazil": 12,
"Pereira, Risaralda, Colombia": 12,
"Jalandhar, Punjab, India": 11,
"Barrancabermeja, Santander, Colombia": 11,
"Tuluá, Valle del Cauca, Colombia": 11,
"Buenaventura, Valle del Cauca, Colombia": 11,
"Guadalajara, Jalisco, Mexico": 10,
"Goiânia, Goias, Brazil": 10,
"Adelaide, SA, Australia": 10,
"London, England, United Kingdom": 9,
"Armenia, Quindio, Colombia": 9
},
"end_time": "2015-02-19T08:00:00+0000"
},
{
"value": {
"Bogotá, Distrito Especial, Colombia": 207,
"São Paulo, Brazil": 103,
"Melbourne, VIC, Australia": 95,
"Cali, Valle del Cauca, Colombia": 75,
"Medellín, Antioquia, Colombia": 72,
"Bangalore, Karnataka, India": 40,
"Cartagena, Bolivar, Colombia": 38,
"Barranquilla, Atlantico, Colombia": 36,
"New Delhi, Delhi, India": 34,
"Ibagué, Tolima, Colombia": 32,
"Calcutta, West Bengal, India": 31,
"Bucaramanga, Santander, Colombia": 30,
"Sydney, NSW, Australia": 29,
"Lisbon, Lisboa, Portugal": 27,
"Mumbai, Maharashtra, India": 27,
"Mexico City, Distrito Federal, Mexico": 26,
"Neiva, Huila, Colombia": 24,
"Chennai, Tamil Nadu, India": 22,
"Hyderabad, Andhra Pradesh, India": 19,
"Chandigarh, India": 17,
"Pasto, Narino, Colombia": 17,
"Cúcuta, Norte de Santander, Colombia": 16,
"Santa Marta, Colombia": 16,
"Salvador, Bahia, Brazil": 16,
"Palmira, Valle del Cauca, Colombia": 15,
"Valledupar, Cesar, Colombia": 15,
"Montería, Cordoba, Colombia": 15,
"Rio de Janeiro, Brazil": 14,
"Lucknow, Uttar Pradesh, India": 14,
"Belo Horizonte, Minas Gerais, Brazil": 13,
"Surat, Gujarat, India": 13,
"Ahmedabad, Gujarat, India": 13,
"Villavicencio, Meta, Colombia": 13,
"Santiago, Region Metropolitana, Chile": 12,
"Brasília, Distrito Federal, Brazil": 12,
"Pereira, Risaralda, Colombia": 12,
"Jalandhar, Punjab, India": 11,
"Barrancabermeja, Santander, Colombia": 11,
"Tuluá, Valle del Cauca, Colombia": 11,
"Buenaventura, Valle del Cauca, Colombia": 11,
"Guadalajara, Jalisco, Mexico": 10,
"Goiânia, Goias, Brazil": 10,
"Adelaide, SA, Australia": 10,
"Dehra Dun, Uttarakhand, India": 9,
"San Luis Potosí, San Luis Potosi, Mexico": 9
},
"end_time": "2015-02-20T08:00:00+0000"
},
{
"value": {
"Bogotá, Distrito Especial, Colombia": 206,
"São Paulo, Brazil": 103,
"Melbourne, VIC, Australia": 95,
"Cali, Valle del Cauca, Colombia": 75,
"Medellín, Antioquia, Colombia": 72,
"Bangalore, Karnataka, India": 40,
"Cartagena, Bolivar, Colombia": 38,
"Barranquilla, Atlantico, Colombia": 36,
"New Delhi, Delhi, India": 34,
"Ibagué, Tolima, Colombia": 32,
"Calcutta, West Bengal, India": 31,
"Bucaramanga, Santander, Colombia": 31,
"Sydney, NSW, Australia": 29,
"Lisbon, Lisboa, Portugal": 27,
"Mumbai, Maharashtra, India": 27,
"Mexico City, Distrito Federal, Mexico": 26,
"Neiva, Huila, Colombia": 23,
"Chennai, Tamil Nadu, India": 22,
"Hyderabad, Andhra Pradesh, India": 19,
"Chandigarh, India": 17,
"Pasto, Narino, Colombia": 17,
"Santa Marta, Colombia": 16,
"Salvador, Bahia, Brazil": 16,
"Palmira, Valle del Cauca, Colombia": 15,
"Cúcuta, Norte de Santander, Colombia": 15,
"Rio de Janeiro, Brazil": 15,
"Valledupar, Cesar, Colombia": 15,
"Montería, Cordoba, Colombia": 15,
"Lucknow, Uttar Pradesh, India": 14,
"Belo Horizonte, Minas Gerais, Brazil": 13,
"Surat, Gujarat, India": 13,
"Villavicencio, Meta, Colombia": 13,
"Ahmedabad, Gujarat, India": 13,
"Santiago, Region Metropolitana, Chile": 12,
"Brasília, Distrito Federal, Brazil": 12,
"Pereira, Risaralda, Colombia": 12,
"Jalandhar, Punjab, India": 11,
"Barrancabermeja, Santander, Colombia": 11,
"Tuluá, Valle del Cauca, Colombia": 11,
"Buenaventura, Valle del Cauca, Colombia": 11,
"Guadalajara, Jalisco, Mexico": 10,
"Adelaide, SA, Australia": 10,
"Goiânia, Goias, Brazil": 10,
"Dehra Dun, Uttarakhand, India": 9,
"San Luis Potosí, San Luis Potosi, Mexico": 9
},
"end_time": "2015-02-21T08:00:00+0000"
}
],
"title": "Lifetime Likes by City",
"description": "Lifetime: Aggregated Facebook location data, sorted by city, about the people who like your Page. (Unique Users)"
}