Z-Wave Network Resiliency Question

I will be slowly moving the devices from my C4 to a C7.

I've read the recommendations both recently from bravenel on moving to a C7 and the original guide to a healthy Z-Wave.

I've had "zero" issues that could be attributed to the Z-Wave network issue, even though when I created my current C4 Z-Wave network I was less informed about the importance of a solid network.

If one has a less than desirable Z-Wave network will it eventually sort itself out or is it required to make "manual" repairs?