The layout shared in the previous thread is preferable over this one due to the following reasons:
1. The 3 guard sensor traces will run through the entire flex PCB and can only join at the connector. This will increase the Cp of the guard sensor considerably and might lead to noise due to incorrect charging and discharging.
2. You can see that there are 3 shield islands in this design
This will cause improper shield operation as well due to the long path of the shield.
3. Since the guard sensors need to be routed till the connector, this will also lead to an increase in the number of pins in the connector required to route the guard sensors (3 additional pins).
In the previous design as well, I would recommend placing a thick trace to connect the shield hatch inside to the one outside.