...
First step is to define which fields from POM v4 we want to keep in consumer POM: 
removed, 
kept because required, 
kept by choice (could be removed if we decide), 
keep only a part of content
| field | status for consumer | comment | |
|---|---|---|---|
<modelVersion/> | | not absolutely required, but kept as usual convention | |
<parent> | | content inlined in consumer POM, because we can and it will simplify consumers code | |
<groupId/> | | ||
<packaging/> | | not absolutely required, since packaging is more a build configuration than something consumers may use | |
<name/> | | necessary because of minimal requirements for central | |
<description/> | | necessary because of minimal requirements for central | |
<url/> | | necessary because of minimal requirements for central | |
<inceptionYear/> | | ||
<organization> | | ||
<licenses> | | necessary because of minimal requirements for central | |
<developers> | | necessary because of minimal requirements for central | |
<contributors> |  | ||
<mailingLists> | | ||
<prerequisites> | | used for plugins, to define runtime Maven version prerequisite | |
<modules/> | | ||
<scm> | | necessary because of minimal requirements for central | |
<issueManagement> | | ||
<ciManagement> | | ||
<distributionManagement> | | | keep downloadUrl field only |
<properties> | | values inlined in consumer POM | |
<dependencyManagement> | | ||
<dependencies> | without system scope | system scoped dependencies removed in consumer POM | |
<repositories> | | need to check if repositories configured in dependencies are used during resolution | |
<pluginRepositories> | | ||
<build> | | this is where the addition of new configuration to enhance Maven build features will be the most useful | |
<reports/> | | let's remove this old Maven 1 compatibility field... | |
<reporting> | | ||
<profiles> | | ||
<id/> | | ||
<activation> | | keep JDK and OS activation only? removing other activations, which are build time. Same as flatten-maven-plugin feature | |
<dependencies> | | ||
<build> | | since removed from base model |
...