I called the book study consolidation and family study night back in '02. My prediction going forward is a major change in FS arrangements. Some of the components of this change would be:
The congregation will be organized for such service in much the same way as FS now, with specific assignments handed out: hall cleaning and repair, visiting the sick, running errands on behalf of shut-ins, etc. Time spent performing these forms of service would be counted on the monthly reports just as FS hours are now. All forms of "sacred service" would be valued equally.
Those who have the "spirit of an evangelizer" would go out in FS instead. In time, the door-to-door canvassing would be limited to those of the evangelizing class (open to anyone who "quailifies").
There are precedents for all of this right now: elders and some pioneers often count FS time by combining their "ministry" with some of these other chores. Pioneers working at quick-builds are given credit for time spent on such projects. The hours for Aux. Pio's and Pio's have been adjusted down.
Whether this will happen in 2010 or not, who knows? But it'll come.