The Page Curation tool automatically places a number of messages on user talk pages (e.g. a page you created has been reviewed, a page you reviewed has been unreviewed). The text of these messages appears to be hard-coded into the tool. Editors have raised a number of issues with them, including awkward wording, lack of signatures, and inconsistency with other forms of semi-automated messaging.
A straightforward solution would be to make these messages configurable locally on enwiki. Presumably, this could be as simple as have the tool place a subst'd template rather than raw text.
Background:
https://en.wikipedia.org/wiki/Wikipedia:Page_Curation/Suggested_improvements#37._Page_Curation_messages
https://en.wikipedia.org/wiki/Wikipedia:Page_Curation/Suggested_improvements#60._Add_information_link_to_'Notices'_message_sent_to_article_creator
https://en.wikipedia.org/wiki/Wikipedia:Page_Curation/Suggested_improvements#62._%22on_behalf_of%22
https://en.wikipedia.org/wiki/Wikipedia:Page_Curation/Suggested_improvements#69._Passive_aggressive_messaging_system