Glider computers - what's important?

RE-ENGAGING:
Rather than talk about which glide computer program is best... what I
need to know is: What INFORMATION/FEATURES do you experienced guys
find MOST useful in XC soaring. I've done only a very little XC (one
flight, Tonopah - Austin - Tonopah), and what I wanted most during
that flight was an easily interpreted bearing and required glideslope
to known good runways/landlouts. I know that once I have that, I'll
start thinking of other features that would be helpful. The question
is, what features do you find most useful?
thermal optimizer?
FAI triangle thing?
Final glide calculator?
Thermal history?
.......

For me, I want to know in real-time exactly how far I can glide in all
directions computed from my polar, McCready setting, ballast, bugs, wind and
terrain elevation. I don't want a list of airports or airports with green
or magenta circles. I want my glide footprint on the moving map. This
tells me a lot about options, alternates and helps with strategy. So far as
I know, only two programs have implemented this GPS_LOG WinCE and XC-Soar.
I use GPS_LOG WinCE which does a better job of it.

While I'm at it, I'd like this feature on SeeYou animationl. That would
make it easier to see exactly what the pilots options were as the flight
progressed.

Bill Daniels