Something to indicate, at a glance, a Group message rather than a text from a single contact, or at least be able to turn on a warning to pop up when replying to more than one contact at a time.

Perhaps have a different color than the standard theme for group messages/conversations. Or possibly display the label "GROUP" before the contact name.

Currently, if the recipient's name is long, it displays with a "..." after it, whether it's the only contact or just the first contact in group message. Both display exactly the same except for a number instead of initials in the contact "picture" or icon.

It's too easy to mistake a group message for a regular conversation.