I have a really similar opinion as ickby. The whole GSOC idea, I believe, is much more to the benefit of the student, basically to make them learn about the open source way of doing things. How much the students actually help the project is not very relevant in GSOC. And it really takes a lot of your time, even us being two mentors for one student.
It was a very good and instructive experience, I had very little idea of how it worked, etc. But the benefit for FreeCAD is very small or even negative, considering the time you need to invest.
kkremitzki's candidature would of course be something to consider seriously
One thing was good I think, is the collaboration with BRL CAD and the other CAD folks. I'd like to keep that going, in case BRL CAD wants to do the umbrella again. But the guy there sees GSOC very differently, he sees it as it should be seen, probably, more as an educational project. So he will advise us to take a student who is not necessarily the idea we are most interested in, but the one who has more chances to succeed in producing something.
In case BRL CAD doesn't propose to us again, we would need to do all the "paperwork" with google ourselves. I have no real wish to do it.
So I guess, the main question is: Is anyone interested in being a mentor?