There shouldn't need to contact a mod since they will change the tier themselves yet here is some basic info ont tier since that seems to be what you need

VII-superpowers only Usa China and India it the start of the game

VI-Minor superpowers basically just below a superpower think of Brazil Japan and Russia

V- Reginal powers around the power of Turkey Germany and the Uk

IV- From here countries generally have 1 starting unit (with acceptions) goof examples are France Italy Iraq Chile and Morocco

III- nations here aren't weak and have potential yet are almost never particularly strong like Ethiopia Algeria Austria and Azerbaijan

II- small countries with low population that tend to be considered weak yet still have a few cities and are the ones that have 60,000 MP like Albania Georgia and Denmark

I- generally the small weak islands of the Caribbean and Oceania and the Citi States like Monaco Antigua and Tonga.

hope this helps