I see this hasn't been updated in many years, and I certainly don't trust myself to do a serious update adding new options for anyone to use, BUT if you do wish to tweak things a bit more it's not so bad to do it yourself. I wanted the output to not be in the form an HTML list, but just items on different lines, as this took up much less space when viewing the wiki on mobile. Near the bottom of the SpecialSimpleChanges.php you can easily enough see where it's opening and closing ul tags (lines 110, 143) and where for each item it's adding opening and closing li tags (lines 126, 135). For my purposes, I ditched the ul bits and replaced the li bits with a br.