Please keep the 3.5mm jack.. I'll still buy a Pandora either way, If there is no built in jack then we could always try soldoring our own on.. But it just seems like the market shrinks a lot with the lack of a standard headphone jack on the case.
I'm not sure how many conductors you're looking for, but a possible fix is to have a four conductor 2.5mm jack nestled beside the headphone jack.. those things are fairly small and relativity easy to get your hands on. I guess there is the down side that some moron will try to plug lord knows what into it.. but as long as the port is labeled properly, there shouldn't be too many problems.
Also, as someone had already mentioned you can use a four conductor 3.5mm jack to give you video.. I think this would be the best option regardless of whether or not we have a hybrid audio/expansion port. And in case you're interested, Here (
http://search.digikey.com/scripts/dksearch...ame=CP-63516-ND) is what seems to be a six conductor jack, still compatible with the typical four conductor 3.5mm standard plug, just with an extra two conductors on the outside to connect with whatever special cable is plugged into it (I think it's pretty cool).
The downside to all of this (besides possibly not having as many conductors as you're looking for) is you might have to put together your own hybrid plug which has both sizes of connector..
The upside, is if you have a left over conductor in the end, you could have each port support a ground, which could give you compatibility for all those 2.5mm headset microphones out there.
Exactly how many pins are you looking for?
Good luck, I hope these issues can be resolved without too much trouble.