Generally, translation groups tend to have somewhat similar taste in novels, so I know that if I like one of them, I may like another. Before I plunge in, though, I like to skim through the ratings to see if it's worth my time. However, especially for huge groups like Wuxiaworld or Wordexcerpt, which both have 70+ series, it's super difficult to get a readable list of all the novels they translate from NU. It's to the point where one very boring, snowy weekend last year, I wrote a webcrawler script to go through each option in the drop down list on a given group and compile all the ratings from each series into an Excel spreadsheet. I don't believe it would be difficult at all to add a "Translation Group" option to the Series Finder page, and then link that to the Group's profile page instead of having a massive and unwieldy drop down list, and it would be much more useful.
In case of Wuxiaworld, you can see most of their novels under https://www.novelupdates.com/epublisher/wuxiaworld/ But yeah, I agree it would be an interesting option to have. ATM I'm going to the list on translators webpage and copy names into NU's search. Another way to go about it would be to add a subpage in the translator's page with the overview of their novels.