what's with the lack of epic boss battle's these days?

[Mnementh]

vivster said:

All games should follow the rule of FF. Make the last battle look epic but make the boss weak.
 I think a difficult endboss is a turnoff. Sure it makes you think you accomplished something but the cost of that is turning away lots of people who just wanted to finish the game and may be not good enough and will because of that never see the ending. Difficulty should be something optional in games.

Xenoblades Chronicles was a bit like you describe. Every story-boss (there were some) was somewhat hard, but not extremely bad. You could find tougher challenges on the map. But it was always an epic battle.