As a user in Japanese Wikipedia mainly working on article translation, this tool is not usable at all given that it does not allow usage of source editor.
I have read the "Why doesn't Content Translation use the wiki syntax editor?" in FAQ and it is not providing a sufficient explanation. It says "After an article is created, it can be edited in the VisualEditor or in the source editor, just like any other article." which means that if one wants to fix any template usage (etc.) by editing the source, it requires multiple edits. This contradicts with w:ja:Wikipedia:同じ記事への連続投稿を減らす (Translation: Reduce multiple edits to the same page).
If you have no plans to allow source editor, could you please add a View Source button into the tool? For me, this will be handy as a check of whether the links already have a Japanese version. Thank you very much.