If anyone is still running outreach editathons to try and recruit new editors, you might want to consider using visual editor. I spoke to some of the WMF people at Wikimania and apparently the issue of it running very very slowly on old kit has recently been largely addressed. I've pointed out in the past that as long as that bug was a "won't fix" you couldn't promote Visual Editor at outreach editathons because even if all the laptops look pretty new, there could well be someone present using a borrowed laptop and intending to use an old PC at home. Since we really can't start an editathon asking the attendees if they all use new computers at home, and then reverting to the classic editor if someone says their machine was bought in 2010 I and several others have been ignoring the Visual Editor for the last couple of years.
I have just run a quick test on this myself using a friend's old PC and V/E does now work, though it is still a little slower than the classic editor.
Regards
Jonathan / WereSpielChequers