Idea:
Rather than only allowing parties with 3+ members to use party chat, allow all parties to use party chat, despite of the member count in the party.
More information:
A Party chat is a private chat for you and your party to communicate in. It provides various utilities such as callouts, as well as personal private discussion.
There is really no detriment to allowing 2 player parties to have party chat, and only benefits. If the suggestion is to be implemented, those party have a private chat to talk in, without other people’s interruption.