If someone would like to use ewiki for a personal homepage, but
prefers HTML over WikiSyntax+, then this rendering core replacement
may suit his needs. It allows HTML to be used, but still renders
WikiWords+ into valid hyperlinks (a few other features from the
original ewiki_format function are also supported, but you can
strip even those).
prev << "markup/rescuehtml"
next >> "markup/1emphasis"

You cannot modify the README.plugins file, but anyhow any ideas or suggestion should as usually get filed on BugReports, UserSuggestions or even better the README.plugins.Discussion.