One thing I really like about games now are achievements (360) and trophies (PS3).
And it does have many possibilities if Phantasy Star IV had come out in the present time:
I'm not going to bore you all incessantly, but some trophy ideas I had were (and feel free to fill in more):
Bronze:
No worms on us (Complete the Ranch Owner Hunter's Guild Mission)
Dog eat Dog (Complete the Tinkerbell's Dog Hunter's Guild Mission)
You wand it? (recover the Psycho Wand from the Laeda Tower)
This Tusk's on You (obtain the Silver Tusk in the Myst Vale cave)
Silver:
Vanquished Zio (defeat Zio in battle)
Defeat the Force (defeat Dark Force in battle the first time at Kuran)
Defeat the Force II (defeat Dark Force in battle the second time at Garubek Tower)
May the Force not be with you (defeat Dark Force in battle the final time at Soldier's Temple)
Down with the King (Defeat King Lassic in battle)
Dew it (have at least one of each of the three types of Dew in your inventory)
Sign of the Cross (successfully use the Grand Cross combo attack)
Pyromaniac (use the Foi series of techniques over 100 times)
Cold as Ice (use the Wat series of techniques over 100 times)
Gold:
Master of the Hunt (complete all Hunter's Guild missions)
Big Spender (spend over 500,000 mesetas during the game)
Party Power (have all party members over level 40)