Damn, sorry, Maji, was too busy with personal stuff that I forgot to frequent this. But glad to see that you fully completed it.
Isn't there another reward from the God Dragon to open a portal at where you got the flying bird to hatch? I got that option on the GBC version, so I guess the GBC version has another bonus dungeon, but that one is hell. Why? Because in orer to fuly complete that one you have to have bronze and silver medals of nearly EVERY monster in the game, as there are 2 gates that require you to have those. Medals are just fairly pointless portrait coins of the monsters you beat that happen to be obtained per chance at the end of a fight, and you only get bronze versions of them until you collected at least 2 bronze ones, then you can get Silver ones from them, and then gold ones. You can trade them at the Dharma shrine. (That place where you can reclass your characters) but it's such a boring hassle, I barely got myself to finish that.
Can't wait until 4, man.