I got selected for Google Summer of Code 2014 this year to contribute to Raxa EMR and I'm thankful to Google and Raxa.
I think if you want to get selected for GSoC what matters is not the number of proposals you submit but the quality.
My project is to implement a mobile app that allows users to search for hospitals, doctors, pharmacies and view them on a Google map. And the user can get directions to the location and call if phone number is available. If the user is a registered user he can view his profile after logging in and he can make appointments with doctors. The user can mark his favorite locations. The app will support language translation. The technology used is Sencha Touch and the app will be able to run on both iOS and Android.
Project wiki can be found here.
Code repository can be found here.