Bosses die like every other foe out there (boring)

Hi There,
I got one suggestion, and I would really like to know what others think about this....

There is one thing all MMO's of today have in common: All bosses die a very boring death.
( they just drop dead ) no special effects, no sound effects, nothing how boring ( I miss the old arcade style boss deaths ). they really gave you the feeling you just killed a major game boss.
not to mention the satisfaction you feel after all that hard work and revenge feeling for all the times you might have died trying to kill that boss.

My idea's for boss deaths are the following:

Bosses should have a specific dying style if not unique per boss at least per elemental class, for example:

fire elemental: should cool down and become solid than start cracking up and than blow up from temperature difference pieces of shrapnel damage players all around his last dying way of taking you with him.
ice elemental: should freeze than shatter to pieces of shrapnel damage players all around last dying way of taking you with him.
earth elemental: should break to pieces and cause earthquakes in the boss room making it his last dying way to take you with him.

water elemental: should implode than explode from pressure and density difference and a wall of water tsunami style would rush out and drive players towards the walls of the room or dungeon where spikes and other stuff might impale you.

metal elemental: I leave this one to your imagination can't find a good one a.t.m

Non elemental: should go berserk running around harming himself and others while disintegrating.

wood elemental: turn to trees with vines start snaring players and slamming them to the ground than dry up wither and die or become dust.