Suggestion to make pvp > pve in Shatter:
They should make big Ice pulse while it is active, any player "hitted" (no damage) by its wave will gain a crystal stack debuff, it can stack up to a max of 3.
When you kill someone with crystal stack, your party gain 3 additional points for each stack.

It would be nice if near the name will appear the shard/crystal/cluster icon depending on how many stack you have (like for medals).
Obviously it would need an adjustment of max points to win.

Another possible lazy fix for it:
Make the ice pulse and give a 10% vulnerability to all the players in 30y range.