Hi,
Can you give us more information about your background and interests?
The project ideas page on the wiki [1] has a few concrete project
descriptions mainly written for GSoC 2014. Most of these are still
relevant, perhaps in a slightly different form.
[1]
http://wiki.lmona.de/get_involved/projects
Would you like to work on any of these?
Cheers,
Burcin