It's not so much the cost of the premier access I would worry about, it's how the park will look for those who don't purchase it.
At $120 (this seems like a good estimate, the cost at Shanghai is about 130% of a 1 day ticket) this would cost my family $480 more for each park day I use it than it costs for a park day right now. That's pretty significant. While a place like Cedar Point is probably a day trip, WDW for most is an extended trip. We usually have 10 park days. If we purchased this for even just 4 of our park days, we are looking at over $2000 extra. And that's just for 8 rides, it's not unlimited like say universal. Also, parks like universal have wait times (without the pass) that aren't as long as Disney.
The thing is I wouldn't have to pay it which makes me fine with it. But the question is will my trip look better, worse, or the same under the new system without it? If they are offering the "Standby pass" I think it could be the same or better. But again, it depends on how often the standby pass is offered and what a "busy" day is to them. If the days I usually go offer the standby pass I think it will be fine.
If they bundle this up into a package that would be a whole different discussion...