Motherboard connectors (attempt 1)

To make the system work with ribbon connectors etc, here's a suggested pin requirement. Please comment...

it makes 19x2 in total... 19x 0.1" = 1.9" long, 0.2" wide connector.

POWER
+18VDC - Analog
AGND
-18VDC - Analog
AGND -
Analog12VDC - Digital Supply
DGND
Requirement: 3x2 0.1" connector

Clocks
FS - Typically 44.1kHz
DGND
256fS - 256xSampling Frequency
DGND
512fS - 512xSampling Frequency
DGND
Requirement: 3x2 0.1" Connector

Control
SPI - CS (SPI Chip Select)
DGND
SPI - SCLK (SPI Serial Clock)
DGND
SPI - DIN (SPI Data In)
SPI - DOUT (SPI Data Out)
SCK - I2C (I2C Clock)
DGND
SDA - I2C (I2C Data)
DGND
Requirement: 5x2 0.1" Connector

Audio (Left Justified)
LRCK (Typically the word clock brought in from the clock source)
DGND
BCK (128fS or 256fs)
DGND
Data (Left Justified Data)
DGND
AES+ (S/PDIF or AES Data)
DGND
AES- (S/DPIF or AES Data)
DGND
EXTRA1
DGND
EXTRA2
DGND
EXTRA3
DGND
Requirement: 8x2 0.1" Connector