How about a standard translator that takes generally accepted conversions of more complex language constructs into simpler language? How about a thing that changes less well known words and puts in easier words?
Here's the Equality Act Easy read version: https://www.gov.uk/government/uploads/system/uploads/attachm...
And the Equality Act non-easy read: http://www.legislation.gov.uk/ukpga/2010/15/contents
Here's a Google search for some easy read documents: https://www.google.co.uk/search?site=&source=hp&q=easy+read+...
Here's Mencap's (a charity that works with people with learning disability) guide to Easy Read: https://www.mencap.org.uk/make_it_clear