2 things I desperately need .
I'm a mainstream user turning to linux (on the laptop too) and I would make good of :

1. a user friendly PIM (Calendar, Adress book, Task and Memo) that synchronizes at least with my laptop and some cloud app (Google lacks the memo part and the task is not too sexy, but I could go with it).
2. Freemind (it needs java). My mindmaps are a lifeline in my professional life. I cannot do without it.

I'm crossing my fingers on these.