I don't love this new system but I suppose I hate it less than I feared I would. Maybe that was by design - show us how much worse it could be by announcing the DLP version first so people say, "Well at least it's not THAT!"
I remember several posters saying they hated FP+ because they don't like having to get up and be on their computer or mobile device at 7 AM 60 days out. Well now the "fix" for that is to have to get up and be on your phone at 7 AM every day of your vacation that you want to use Genie+, which means you'll likely also be spending some time the night before deciding what you want to aim for the next morning. Rather than 1 stressful morning in advance of your trip, you've got stressful mornings every day you are visiting one of the parks and lose the option to sleep in if you don't like being up that early on vacation - and pay extra for it. That sounds much worse to me.
If the rumored Tier 1 rides are correct, I likely won't miss anything at MK since 7DMT isn't as good as Big Thunder in my opinion and Space Mountain is fun but very uncomfortable for a tall skinny guy inching closer to being middle-aged. I've skipped it my last 2 trips and won't feel even a tingle of desire to pay for the Lightning Lane.
In Epcot, we usually skip Test Track so being able to ride both Soarin' and Frozen without long waits on the same day would be an improvement for us. I'd like to ride Rat when we go in December but will likely gamble on the Boarding Group and evening hours rather than pay even more for it.
In DAK, my wife and I don't live FOP, so no loss there for us and I feel like the Safaris should have enough capacity to prevent us from feeling like we need to skip the line.
DHS is where we'll feel the impact the most. With ROTR and Slinky being Tier 1, we may miss out on one or both rides, especially with the paid LL meaning fewer Boarding Group spots for ROTR. Theoretically, the paid option might help us finally be able to ride ROTR, but I'm assuming it won't be cheap even though we tend to visit during what was traditionally the "slower season" before dynamic ticket pricing helped spread out the crowds a little throughout the year.