I just put some numbers on paper and I think $900-$1000/person for a 2 night / 3 day experience would be a bargain. Let's begin with just two nights of lodging at a "Deluxe". That could easily be $600/night. Based on double occupancy, $300/person per night, $600 total per person just for a place to sleep for two nights. Of course, single person price would be much more. But, if more than two can stay in a room, then the lodging costs really turn into a better value.
Now, meals... The regular dining plan has one QS, one TS, plus snacks and costs about $76 per person, per DAY. For three days, that is just under $230. But, consider that a dinner show like HDD is $72pp for good seats, and if you get two dinner shows, meals and dinner show(s) for this experience could easily exceed $400.
So, for lodging (assuming double occupancy, and only for two people) and meals we at $1000 per person for the 2 night / 3 day experience. Add in custom experiences in the hotel (aka Starship), and access to SW:GE for either a partial day (or night) at prices like MVMCP starting at over $100 per experience... the price easily could top $1200. And, that's at just basic WDW pricing.
Quite honestly, I was skeptical that this special experience would be something I would be willing to pay for. But, if the cost does stay at the $900-$1000 per guest range, I would jump on this in a heartbeat. I could even justify spending up to $1500 per person.
Sadly, if the cost does stay at this level, I can imaging the waiting list would be huge. I would expect Disney might need to increase the per person price to as much as $2000 to reduce the demand a little. Even so, reservations very far in advance would likely be necessary
Now, where do I sign up????