We'll have to see how it turns out, but I'm still having a hard time seeing it as a multi day completely (mostly) stand alone experience instead of a compliment to the rest of the WDW offerings.
From a sales perspective, it's a very different thing too.
As a compliment to the rest of WDW, it's an upcharge for an additional experience, probably many hours of experiences. That's a relatively easy thing to think of. Just like people pay the upcharge for better restaurants or better hotels, or better/different activities. The sales proposition is that you're enjoying the entire WDW complex and upgrading assorted activities. Paying for a a few days to get a bunch of Star Wars stuff sounds like a good deal. Even if expensive, it could fit right in.
As a stand alone attraction that replacing the entire WDW complex (mostly), it's a very different proposition. Now, instead of providing an upcharge premium experience, it's providing a competing experience. The stand alone Star Wars experience is competing to replace the rest of the WDW complex and all of it's offerings. And, at a premium on top of that.
If I've got 7 days to vacation (more or less), the stand alone proposition is that instead of 7 days of the entire WDW complex it's replaced by 5 days of the WDW complex and 2 days of Star Wars experience. Those 2 days are a direct competition to using the rest of WDW for days 6 and 7. Even worse, the park tickets with park hopper for days 6 and 7 are about $50 (when you buy 7 days instead of 5 in total). So, it's stay at whatever resort an extra 2 nights plus practically free park access vs what we're assuming is a huge upcharge for 2 days in Star Wars.
It's possible they can sell this. Especially with the Star Wars hype, and some very through marketing. But, it feels strange to position it as competition to the rest of WDW instead of complimentary.