Ive refactored the parselinks stuff into a single node called ParseLinksInContent. It has a prototype implementation of a spoiler tags, currently defaulted to do the link and omit strategy. I havent touched User Settings yet, so there is no way to control the style of the link. Ill get to it if nobody else does. You can use the param 'oldparselinks' to revert back to the previous behaviour.

BTW, the CSS does now support the 'spoiler' class so folks can use that directly if they prefer. see :-)