This has been a reascending theme in pokémon for a while now, but lately, we've seen a lot of appearances from the characters of the old games. For example, we saw Jasmine in gen 4, and in Gen 5, we've practically saw every gym leader and champion from the past pokemon games. We've been seeing the Sinnoh champ Cynthia a lot, especially.
So, do you think that they will make more cameo appearances in these games? Who would you believe will make a brief appearance? For example, maybe we can see the main protagonists from the past games, other than Red? How about other important characters like past rivals? (ie. Silver)