Believe me, the Remote way of communicating with Cross is completely dedicated and not re-usable at all...
Currently (and from what I know), the only MIDI controllers handling text are some Denon ones. These are partially implemented in Cross (could be finalized if it'd become really wanted and used).
If you're looking for a solution to get text over MIDI, you might follow their spec, but you'll rapidly understand that MIDI was not made for text ...