I've made a
little mod to make the reward really good.
Giving the trident the killing light power of the sword of living colors should make it sufficiently interesting to see all nations risk a real champion in the match.
It's also a way to balance the powerful reward if the death match happen too early in the game, because the champion himself need high MR to avoid the dammage, he would probably be killed by the light if he tries to use it before his nation can forge MR gear.
The problem is to have MP hosts use it. I think little mods aren't popular (out of urgent fixes) because it forces player to download one more mod for just a little change.
This kind of modification should be included in Worthy Heroes or CBM to start to be regularly used.