We have been DVC members since Feb 2002, so I guess our 20 year anniversary is coming up next month!
I think one of the underlying problems to the fast pass system is there just aren't enough new attractions for folks to go on and so Disney has to ration the access to the high demand attractions.
I thought Fast Pass was a great advancement when it came on line, but I didn't like to have to go fetch the fast pass at the attraction and then come back later.
FP+ took care of that. I liked saving a few steps, but I didn't like scheduling attractions in advance of our trip. Also, this is where Disney started rationing the attractions you could get. You could only sign up for 3 in advance. Then, you could not pick the most popular attractions. For example, (IIRC) you could not get Frozen, Soarin and Test Track. In order to schedule all 3, you would have to do it over several days. You could get another fast pass after the 3 were used, but the most popular attractions might be out of fast passes by that time.
But, even with the rationing, there were times when I knew before I even left on a trip to Disney World that I would not have fast pass access to attractions such as Frozen, 7DMT or Flight of Passage for the entire trip. (And I wasn't nimble enough to get on the Rise of the Resistance virtual queue--so I did not experience that attraction until this year with the help of my more tech savvy nieces.

)
I didn't necessarily
like paying extra for Maxpass at
Disneyland, but it was the system with which I have had the most success using so far.
I think Disney has come up with a system to monetize excess demand while rationing access to the attraction. Here's what I mean: They could have added the price of Genie + and ILL to each ticket. But, maybe the ride capacity will not allow for everyone who enters a given park to get on the most popular attractions. I think charging extra will adjust the demand. I know it has altered my behavior. I think I am good with going on RotR maybe once an entire visit (or maybe every other visit). It has allowed me to schedule the ride (if I want to pay) whereas before I would have been completely shut out.
I just have not figured out how to optimize genie + to where it is not an irritation. I am paying extra for it, so I expect to get my money's worth. This is where the underlying problem (not enough attractions that I'm interested in going on) comes into play. For example, there are about 4 genie + / ILL attractions that I enjoy going on at Disney Studios. They are RotR, Mickey and Minnie's Runaway Train, Toy Story Mania and
sometimes ToT. (A
lot of the other attractions give me motion sickness and it just isn't worth going on and feeling ill for the rest of the day.) So, it hardly makes genie + cost effective (
for me). With shopping and looking at a couple of other attractions (for which no genie +/ILL is either available or just not necessary), I'm done with the Disney Studios in half a day. Park hopping is available after 2pm, but then a lot of the more popular attractions will be out of genie + selections by the time I get over to the other park (like peter pan/7DMT).
I think genie + probably did work better (
for me) at DL than at WDW because there are more attractions that I like going on (per park), but one interesting thing that I ran into going with an extended group was if we were not all together--we might go on the standby line so we could save our one time per day genie + access to go with the entire group. That sometimes ended up where we didn't use it at all for a particular attraction because we had already gone on the attraction and we couldn't coordinate the group activity (before they ran out of Ill/genie+ll).
Anyway, if I don't use genie + on a lot of attractions I start to question whether genie + was worth the extra $$.
I don't know how genie+ translates for first time visitors. I assume this group would be more interested in going on more of the genie + attractions, so maybe it is more cost effective?