Could you add another signal to SPI interpreter? It would be nice to have both data lines (MISO and MOSI) in the single interpreter instead of two.
Also, how about one more for things like R/S or D/C. I know I can add it as a separate signal, but if it was part of the group, it could control things like the color of interpreted data (so for example data bytes could be green and control bytes yellow.) Is that possible at all?
Finally, it would be great to have a row for skipped bit when 9bit SPI is used (this bit is sometimes used for D/C) and and the ability for that bit to control the color (as above.)