In this order:
1) A proper couch/online-multiplayer Mana game. Legend of Mana is a terrific game that suffers from the troutty 2P mode (and subpar fight mechanics, but honestly, I play it for the stories, not the battles), SoM and SD3 were much better for that. On the DS, Children of Mana is a pure dungeon crawler, with local multiplayer but meh. Sword of Mana on the GBA doesn't have proper multiplayer, which sucks because the game is a good remake. Heroes of Mana and Dawn of Mana are better left ignored. >.>
Secret of Evermore's nice too but has no multiplayer unless you go the rom patching route.

2) A good remake of SaGa Frontier 2 or a game with the same philosophy of epic stories and heroes and leaders and generations in the SaGa universe.

3) A Chrono game, preferably turn based RPG.