Suggest include a look for and replace to help with translations. I.e. to look for "Spanish" and replace with "Español" or "Castellano" in the destination page. This is for controlled translations.
Topic on Talk:Content translation
A generic search/replace may be useful, but from what I understand the underlying issue is caused by the fact that Machine Translation is not learning from the corrections that users make. That results in the user correcting the same word again and again. I described the issue and possible solutions in this ticket.
If this is the issue, I think we should first try to address that issue directly without the need for the user to go through an explicit fixing process.
'''Yes''', this is the issue. If you want, first can be addressed the learning form the corrections that users make. But in the second step, a look for and replace can be also a usefull tool.
On the other hand, the page title would be automatically translated to the destination language (it could be confirmed by the user). Nowadays, from English to Spanish, the title appears in English (i.e. Cycling in Spain doesnot appear as "Ciclismo en España".
Also does not properly translate "References", because appear "References" instead of "Referencias".
Keeps the word "Greenways" although it detects the link is to "vía verde (paisaje)", so the right translation would be "vía verde" (really the plural "víaS verdeS").
If I change " protected intersections" by "intersecciones protegidas", the text appears OK in the "Cycling in Spain" page, but the link goes to "protected intersections" in the Spanish Wikipedia, when would be to "intersección protegida" (cannot edit the link destination).
Does not translate the number 8.1 to 8,1.
If you add a translated section and later want to delete it, it is difficult (you can delete the text, but not the images or section title), although when you . But in the destination page (the page that finally appears in the Spanish Wikipedia), the section doesnot appear.
This is all I have detected when translating this short article. Hope it is usefull to improve the tool, that is a good help.