Raspberry Pi CM4 carrier board

Project of a carrier board for raspberry pi compute module 4. Requirements:
- supply voltage: 24V
- isolated rs-232/485 (configurable or both as a separated interfaces)
- isolated canbus
- 16x digital input 24V (expander over i2c)
- 16x digital output 24V (expander over i2c)
- sd card slot
- 2x USB
- slave USB
- LEDs and buttosn (power status, reset, eMMC programming, etc)
- standard RPI 40-pins header
- compact size
- optimization for JLCPCB

Designer must be experienced with CM4 or other CM modules.