Analog Devices Gyro: What are these pins for?
The charge pump pins are simply attachment points for the external capacitors the gyro needs to function. There's no reason to break them out on a breakout; just connect the recommended capacitors.

The summing junction pin is another pin for external capacitance, but in this case it allows adjustment of the lowpass filter frequency on the output. A larger capacitor means a sharper lowpass filter. Depending on your use-case, you may either want to include a capacitor and not break it out, for fixed frequency operation, leave out the capacitor and require users of your breakout to add it, or include a minimum sized one and allow users to add more in parallel if they want a lower cutoff frequency. The choice is up to you.