So recently I messed around and saw a potential strategy w/ Soul Harvest but sadly the only way to trigger it is via killing with a spell.... I think if they changed it to as long as the player with it equip kills anyway/how it will trigger. I don't think anyone would mind that because it's a buff plus it doesn't completely counter summons but it should help balance it out since once you kill 1 summon then all the enemy ones will focus on the new summon and over time you create your own summon war just via your pirate.

Just an idea to balance the meta mostly since the 2nd season is coming in 2 weeks maybe this could be changed and see how it turns the tables? :)