I have not played M2TW in a very long time, but I have it along with Kingdoms. There are 31 faction slots and they are not all used so I figured I would just port some Kingdoms factions to M2TW until there were 31.
Here is a proposed list:
1. England
2. France
3. Spain
4. Holy Roman Empire
5. Venice
6. Byzantine Empire
7. Russia
8. Milan
9. Sicily
10. Poland
11. Hungary
12. Turks
13. Egypt
14. Scotland
15. Denmark
16. Papal States
17. Moors
18. Portugal
19. Mongols
20. Timurids
21. Aztecs
22. Norway
23. Wales
24. Ireland
25. Lithuania
26. Mayans
27. Tlaxclans
28. Tarascans
29. Apache Tribes
30. Chichimec Tribes
31. Rebels
Only thing necessary is porting in the new factions really.
What do you all think?