Track new config defaults slated for 4.0

### Provide a brief overview of what the new feature is all about

In this issue, we are collecting all config settings that were introduced in the 3.x series that are slated to become set by default in 4.0

### Tell us how the new feature should work. Be specific

_No response_

### Not required. Suggest how to implement the addition or change

_No response_

### Additional Context

_No response_

Start by inventorying configuration settings introduced during the 3.x series and determining which are intended to become defaults in 4.0. The issue is complete when that inventory and the associated default changes are identified and documented.

Written by the indexing model from the issue text.