One thing I'd really like to see as a PRO feature is printability. Not for Geni to make the prints or posters itself, but the ability to format genealogical reports and profiles, etc. so that we can print out our family information at home to share with family members who aren't internet users, or to create a coffeetable binder to share. There is still a culture of "hard copy" folks out there.
It would not be hard to have a "print this page" type of format option (like many online news articles do), or a "generate report for ____ generations" (up or down, ahnentafel or descendancy) formatting option.
Many sites and software programs do this. An example is Rootsweb's WorldConnect (http://worldconnect.rootsweb.ancestry.com/cgi-bin/igm.cgi--get into a tree and look at the options, which can be set by each person who uploads their tree). You can arrange the information into different kinds of reports, and then there is a link at the bottom of the page for "Printer Friendly Version."
Geni desperately needs something like this for its users. Thanks!