I've also added the proposal to the list with a copy/past of the message. Feel free to improve it if needed. https://www.mediawiki.org/wiki/Mentorship_programs/Possible_projects#Extensions
The community is, I think, very happy with this request as this proposal is related to "back office" changes that will allows to add new features and support of the Visual Editor that is a feature waited for a long time.
> Date: Mon, 25 Mar 2013 15:04:38 -0700
> From: qgil@wikimedia.org
> To: thomaspt@hotmail.fr; zanni.andrea84@gmail.com; wikisource-l@lists.wikimedia.org; dacuetu@gmail.com; sumanah@wikimedia.org
> Subject: Re: [Wikisource-l] Missing project ideas for GSOC
>
> Good to hear from the Wikisource community!
>
> On 03/25/2013 02:12 PM, Thomas PT wrote:
> > Hi!
> > Yes, I think that a GSOC project related to Proofread Page is a very
> > good idea. The things to do would be:
>
> After going through a lot of possible projects, this is the approach I
> find more efficient:
>
> 1. File an enhancement request in Bugzilla.
>
> 2. List the proposal at
> http://www.mediawiki.org/wiki/Mentorship_programs/Possible_projects
>
> If you need already proposals written somewhere you can simply link to
> them, no need to duplicate.
>
> If the community is happy with the request, it sounds feasible and there
> is at least a mentor supporting it, then we can add it to GSOC 2013. If
> not, then we can keep polishing in Bugzilla and wait for the next
> program, if nobody decides to take it before.
>
> Looking forward to hearing from you. Soon. :)
>
> PS: personal anecdote: my first significant contributions to Wikimedia
> were done at ca:wikisource some years ago...
>
> --
> Quim Gil
> Technical Contributor Coordinator @ Wikimedia Foundation
> http://www.mediawiki.org/wiki/User:Qgil