Future plans for this[edit source]
This is mostly a note for my own future reference, but if anyone else wants to go ahead and do this stuff, that's fine by me!
Eventually I'd like this template to have a customizable warning. It'd also be good to be able to change the group it's in ("mw-customtoggle-[name]") so that different spoilers on the same page can be toggled individually, if the editor so chooses. Also, a better icon would probably be good. I just grabbed a random one. Fuzzlepuzzle (talk) 09:35, 7 June 2017 (UTC)