Hopefully, those details will be clarified soon. I think they're trying not to overwhelm people with details before the system is even implemented, but that makes it difficult for someone (especially someone visiting soon) to know what to expect.
WDW has always required a good deal of research and planning. I remember buying both the official and unofficial guides before our first trip to Epcot in 1984. As it's grown, it has become increasingly unwieldy. Disney initially tried to alleviate the problem with systems that were "all-inclusive," like park-hoppers that let you pay upfront and then make decisions as you go.
But as
@MisterPenguin pointed out, it's become a victim of its own success. This has led to rationing in the form of ADR's being made 180 days out, line-skip systems and now park reservations. From what I understand, FP+ wasn't working because too many people were using the free system, making standby lines too long. As a paid system, Genie+ will likely have fewer people using it and should have less of an impact on standby lines. Also, many people hated having to make ride selections 60 or 30 days in advance. Genie+ allows for very little scheduling.
I hate to condemn any new system before it's even been implemented, but Genie+ combined with the need to make park reservations may be challenging for the way my family vacations. I don't think we'll be the only ones. I would hate to be a CM trying to explain to someone that they can't use the park hopper they bought because they decided last minute to go to a water park in the morning and didn't scan into the park they reserved. Also, I'm not too crazy about making ride reservations at 7 a.m. if that turns out to be necessary.
We're keeping an open mind for now, but if it gets to the point that WDW is too much to handle, we'll have to start looking into other vacation options. If enough people do this and attendance drops, Disney will have to make changes if it wants to keep the parks operating. Market forces will work to change Disney; posters telling each other how to vacation will not.