I think when you do /r it should also tell you how much longer until your next rupee bonus. This would be much easier than having to reconnect to be able to see it.
It is 2 lines, it shouldn't be THAT spammy: Your rupees balance: 69 20 hours left until your next rupee bonus!
I like the sleek design of it now, where one line says what you want. I for one could care less about this, maybe it could be toggle-able.
I see what you are saying, and I think just like the nice 9 long joining message ( I included the space ) we can deal with it
For me /r is a sleek and easy way to check balance which I do a lot. For an extra message to be there that I don't even care about quite honestly would be an annoyance.
Just throw a semi colon after the amount of rupees, and continue on with the hours left. Bam, one line.