I don't really know if ranked parties are even going to be a thing considering they don't allow you to play ranked with friends now. Somehow they would need to make sure everyone in the party is the same rank for it to work.
I hope they just have a regular splatzones mode without the ranks involved, because the mode itself is really fun when you're not worried about losing points
Hard to believe they'll keep splatzone as the only ranked mode. Once all the modes are released they either need to rotate which one is ranked every day or two and/or have each mode have a ranked and unranked mode, but I don't think there'll be enough players to keep the matchmaking quick. I want to play splatzone but sometimes I just don't want to stress about shitty teammates etc so just play turf war instead where I can just relax.