In the friends option, you have the option to message them. But everytime you need to have to message them, you have to type the command over and over again and it gets quite annoying. Whether it's a really short message or long, it could be a pain to retype it just to say this. Just a simpler format to quickly reply to someone you recently messaged, such as /rf {message} or /fr {message}. Thanks.
tl;dr: +1 Something like this would be a really nice addition. Subservers have this functionality, /m <user> sends a message to that user, and thereafter /r replies to the most recent person whom you sent/who sent you a message. If this were implemented for minigames, it would make life much easier when trying to message friends, especially those who have complicated igns. The one drawback is that the message system on subs only works for that specific subserver, whereas /msgf works across the entire server. While it makes sense that you can only message people when you're on the same subserver as they are, for minigames this does not quite translate as well, as there are only up to 24 players in any given minigame lobby, which is a possible explanation for why the same messaging system is not used in minigames. However, similar to what you suggest, I think if /msgf was replaced with /mf and /rf, it would make everyone's life much easier.
I was no joke thinking of requesting this a while back so i would love if this got implemented escpeccially for those people who have long or weird names