There's something about death and the resulting penalty that adds a level of excitement, of nervousness, tension.
Your senses are on high alert....
I think it makes you want to try your best.
You could always have healers on standby or a dragon with PR to rez the player that died. Of course then you are limited to 1 death every 15 minutes or hour, depending on whether it was a PR or a SR.
Perhaps there could be another set of teams for no-DP deaths for those that want it, and the regular teams for those that want the added excitement.