I plan to propose a GSOC project through Wikimedia this year, based around
the idea of Parsoid-based online-detection of broken wikitex
t. The original idea of the project is defined here , Which is to
develop a tool that will use parsoid to fix broken wikitext found while
parsing wiki pages and then develop a user interface for editors to fix
broken wikitext. But after few discussions on the project with the parsoid
team, We found out that we already have tool  which has a decent UI and
which performs same functions. But it lacks the fixup information that
parsoid generates while parsing wiki pages. So through my GSOC project we
plan to integrate this information with the tool.
After having discussions with parsoid devs, I have written an application
draft under my username .
I would be really thankful, if I get some feedback.
 - https://www.mediawiki.org/wiki/User:Hardik95/GSoC_2014_Application
Bug Link - https://bugzilla.wikimedia.org/show_bug.cgi?id=46705