Here's a general breakdown of how I currently see all the countries/territories, and their potential for producing a quality list on their own.
All groups are listed alphabetically. I've left out many small territories that are listed on imdb, but don't seem to have any film industry of their own.
Group 1 (Blue - 29 countries): Big production countries that have more than enough cinematic output and forum interest to warrant their own poll.
Argentina, Australia, Belgium, Brazil, Canada, China, Czechia, Denmark, France, Germany, Greece, Hong Kong, Hungary, India, Iran, Italy, Japan, Mexico, Netherlands, Norway, Poland, Russia, South Korea, Spain, Sweden, Taiwan, Turkey, United Kingdom, United States of America
Group 2 (Green - 23 countries): Medium production countries that have enough cinematic output and probably enough forum interest to warrant their own poll.
Austria, Bulgaria, Chile, Colombia, Croatia, Cuba, Egypt, Finland, Iceland, Indonesia, Ireland, Israel, New Zealand, Philippines, Portugal, Romania, Senegal, Serbia, South Africa, Switzerland, Thailand, Ukraine, Vietnam
Group 3 (Orange - 41 countries): Medium production countries that probably have enough cinematic output but maybe not enough forum interest to warrant their own poll.
Algeria, Angola, Armenia, Azerbaijan, Bangladesh, Bolivia, Bosnia & Herzegovina, Burkina Faso, Costa Rica,
East Germany, Estonia, Ethiopia, Georgia, Ghana, Guatemala, Ivory Coast (Côte d'Ivoire), Jamaica, Kazakhstan, Kenya, Kyrgyzstan, Latvia, Lebanon, Lithuania, Malaysia, Mali, Morocco, Nigeria, Pakistan, Papua New Guinea, Peru, Puerto Rico, Singapore, Slovakia, Slovenia, Sri Lanka, Tajikistan, Tunisia, Uganda, Uruguay, Uzbekistan, Venezuela
Group 4 (Red - 115 countries): Small production countries that don't have either enough cinematic output or enough forum interest to warrant their own poll.
Afghanistan, Albania, Andorra, Antigua & Barbuda, Aruba, Bahamas, Bahrain, Barbados, Belarus, Belize, Benin, Bermuda, Bhutan, Botswana, Brunei, Burundi, Cabo Verde, Cambodia, Cameroon, Central African Republic, Chad, Comoros, Congo (Dem. Rep.), Congo (Rep.), Curaçao, Cyprus, Djibouti, Dominica, Dominican Republic, East Timor, Ecuador, El Salvador, Equatorial Guinea, Eritrea, Eswatini (Swaziland), Faroe Islands, Fiji, Gabon, Gambia, Gibraltar, Greenland, Grenada, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Iraq, Jordan, Kiribati, Kosovo, Kuwait, Laos, Lesotho, Liberia, Libya, Luxembourg, Liechtenstein, Macau, Madagascar, Malawi, Maldives, Malta, Marshall Islands, Mauritania, Mauritius, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Mozambique, Myanmar, Namibia, Nauru, Nepal, Nicaragua, Niger, North Korea, North Macedonia,
North Vietnam, Oman, Palau, Palestine, Panama, Paraguay, Qatar, Rwanda, Saint Kitts & Nevis, Saint Lucia, Saint Vincent & the Grenadines, Samoa, San Marino, São Tomé & Príncipe, Saudi Arabia, Seychelles, Sierra Leone, Solomon Islands, Somalia, South Sudan, Sudan, Suriname, Syria, Tanzania, Togo, Tonga, Trinidad & Tobago, Turkmenistan, Tuvalu, United Arab Emirates, Vanuatu, Vatican City, Yemen, Zambia, Zimbabwe
Thanks to Minkin for finding the three missing ones: Laos, Micronesia, Nauru. They're added now.
Here's a map for those who prefer to visualize it:
Greyed territories (such as Western Sahara, Isle of Man, and New Caledonia) don't really have any native film-production, but that doesn't mean they're disqualified. Anything from those places will be eligible for whatever grouping neighbouring countries will be put into.
Whichever group a country is in could change over time, either to an increase in output (such as Uganda in the 2010s) or an increase in forum interest (Georgia has drawn a lot of attention the past few years).
I'll start the threads for the Group 1 & 2 countries once the subforum is ready, though there's a chance that some of the Group 2 countries will be merged with others if there isn't enough robust participation. I'll hold off on Group 3 & 4 countries, until it's decided what the groupings will be - some may be paired off with larger countries (such as East Germany with Germany, Slovakia, with Czechia), promoted to having their own poll (such as Estonia or Georgia), or grouped with a number of other countries (such as Central America or the Caribbean). I don't want to group smaller countries with really big ones if possible, as they'll just be drowned out.
Let me know what you think of these divisions, and feel free to provide feedback on it, which countries you think should change groups, and which countries you think should be lumped together in a single poll.
I'll open the US and UK threads at the start of November, and I can open the other major countries shortly thereafter once I am satisfied with a template.
I'm also willing to do subregional polls for parts of countries that have a strong cinematic tradition (Quebec, Scotland, maybe Catalonia or Tamil cinema) - all of those films would still be eligible for their main country poll, however.