I 100% agree that the TLS BRs should be updated to substitute the phrase Firewalls for Network Boundary Controls. I raised this during the update to that section but it was punted on. If you make a ballot for this Amazon Trust Services is happy to endorse.
For the first one are you referring to a specific ballot change? With the callout the definition of "certificate systems" has long been on the wish list of some of us to get rid of. For what it's worth I read the data requirement for this as the data that is pertinent to operate and offer the customer expected outcomes of those systems. Specifically where it overlaps with TLS BR 5.4.1.