Some of the most ancient of players would definitely be "veterans" but far from any "expert opponents" list. Im not sure that would meet your needs anyway.
For the purpose of the original post I think you might have wanted to ask for people who are consistent winners in a specific type of game. Veteran lists in the past have often aimed toward kill-all games with CBM on medium maps. Since its a team game being created you might want veterans with proven histories in the areas of diplomacy and allied play which I think would be a very different group. In fact I can only think of maybe 1 or 2 people that I would ever consider for both lists.
