Regarding the section where you talk about the potential Genie+ being lower than previous iterations: I just fundamentally disagree with this assertion that you (and many others on this board) are making. There are recent
YouTube videos where Molly (All Ears) walks into MK and does every single attraction using Genie Plus. She has shown you can do that at every park. Even further she does the same thing in other videos but makes it more of a "perfect day" experience instead of just trying to ride everything as fast as you can. We visited towards the tail end of spring break when crowds were very heavy and we were easily able to do all major attractions at both MK and DHS very easily in half days at the parks.
Obviously everyone's experience is going to be slightly different depending on many factors such as crowd size, weather, party size and a million other factors but from looking at the data from the thrill rides website there has been nothing to suggest so far that using the current iteration of a "Fast Pass" system gives guests less potential experiences for they day than the most recent version of "fast pass" systems. We'll see if that changes during they busy summer months and as they tweak availability of Genie+
Regarding planning, I don't see it as a major earth-shattering change. With FP+ you could book the three attractions ahead of time but those choices were limited to tiers and the fact that everyone else was also able to pick 3 ahead of time meant that options were could be much more limited after you were able to use your first 3 FP+ and get more. With just a little planning, you can get an idea of which Genie Plus attractions to for first thing in the morning and then also you are able to pick a time that works best for you when you book the $ILL attractions. Again - during our recent Spring Break trip we made plans based on our research here and watching 4-5 YouTube videos and were easily able to get everything we wanted at very close to the times we were expecting.
Regarding "gaming the system" you can all it what you want but those of us who study Disney's complex capacity management systems and share tips on this board are absolutely using principles associated with "game theory" to maximize their share of a limited resource (ride capacity). Making plans, sharing them to be critiqued and sharing tips to maximize potential are not all too dissimilar to the war-gaming our military does or the table top strategy sessions we use at home or work to come up with a plan. I understand "gaming the system" has developed a negative connotation but we are all trying to game the system - which is different than cheating the system.
Like someone else mentioned - this is all about capacity. These systems are all capacity management. Disney can try to change them all they want but smart people on the DIS or Reddit or some other forum are going to come together and figure out ways to maximize potential resource gathering (ride capacity) and share them with like minded WDW obsessed people. As Disney make changes the details of the system will change some and we may not like that as we have become so familiar with the old system, but over the last 15 years most of the strategies have really not changed much.