(GoT) Duty is the Death of প্রণয়

Just recently I finished পাঠ করা ADWD and simply loved it. It got me thinking about probable end games for SOIAF and the mind truly boggles at the posibilities:). The characters can be divided into three tiers based on their importance:

Tier I
Dany, John, Aegon, Stannis, Arya, Bran, Tyrion, Cersei, Sansa, Jamie

Tier 2
Tyrells, Dornes, Barristian Selmy, Melissandre, Littlefinger, Varys, Blackfish, Griff, Stoneheart, Rickon, Asha, Theon, Victarion, Brienne, Davos

Tier3
Faith, Easterosi (Mereneese, Yunkai...), Wildlings, Other ironborns

Little knowns (as of date):
Others, Rhilor, PTWP, Artifacts such...