Hi Zhenbo,
Thanks for working on this!
I added an idea to the page just now, I didn't add it to the GSoC page because it may too easy for GSoC.
But since OSPP has more options of bonus this shouldn't be a problem.
Another idea I think could be a good proposal is: Implement some of (Prop)Variant{Get,To}* functions in propsys.dll.
I guess some of these functions shouldn't too difficult to implement, starting with writing tests of them would be good for starting Wine development as well.
But since I still don't have a close look at them, I didn't add this idea to the page. It will be appreciated if someone is familiar with this can make any comment.