No! I appreciate your willingness to help, but that goes too far
Yes, let's wait for feedback. I'm actually mostly interested in SWX 2016, 2017 and 2018 feedback. Between 2016 and 2017 there is a breaking point because SWX since 2017 begins to support 3MF and SWX 2018 tells me whether there are changes on in the most recent version.
I'm also willing to fix issues with older versions, but there are either no issues or people don't complain. But if they don't then I can't help.
I'm fine if you only test, what you can do at the moment
I think it was me, mentioning 2013. By the time I'm on the forums, I'm occasionally into my cups. :-)
I don't have (easy) access to ancient versions of SW, though I likely could set up a pirated version just for the test on an old machine at some point just to test, if you find interest.
My advice would be to wait until someone using a version that old complains.