The game is way to easy leading to a lot of players who are not concerned of what they are doing in this game.
The game is easy because the content is easy, not because there is no death penalty.

And waiting 3min isnt nearly the same as loosing 5.000SP unless you fight 24/7 to earn skill points.
Or they could make you wait 30 mins (the time it takes to get back 5000 SP) and nothing changes. How fun.

Why is that? In FFXI it worked just fine.
In FFXI you either grouped or didn't play. There was no other choice, so of course it 'worked'. "Too bad" this game is different.