One topic that should be researched out is what it takes to get a residency or work visa for each country. I saw something about FM3 and FM2
Columbia
Ecuador
RESIDENT/IMMIGRANT VISAS
Foreign nationals may apply to settle in Ecuador and obtain resident status. Resident visas are approved by the Immigration Board in Ecuador . The documentation process takes at least 4 to 8 weeks. There are a number of different resident visa categories, including:
10I Retired persons who receive pensions from their native countries (required minimum monthly income from a foreign account USD 800 for the main visa holder, plus USD 100 monthly for each family dependent).
10II Real estate and securities investors who are willing to invest in Ecuador a minimum of USD 25,000, plus USD 500 for each family dependent.
10III Investors in industry who wish to export agricultural products, livestock, or minerals, (minimum investment of USD 30,000).
10IV Companies with foreign local agents who possess unlimited power of attorney to represent the company in Ecuador, provided that 80% of the company's local personnel are Ecuadorian.
10IV Technicians or technical experts under contract with a company established in Ecuador.
10V Professionals with university degrees recognized by a national university, who wish to practice their profession in Ecuador . Should the applicant's profession not exist in Ecuador , the degree must be locally certified. The applicant must also fulfill the requirements for such practice (e.g. bar).
10VI Individuals economically dependent on spouses or on a bloodrelated family member (family).