My regular experience with Disney dates back to when Annual Passports were unknown and the laminated variety. Anyone who defends FP+ really doesn't have experience with the parks prior to its implementation. I've never heard a long time park regular make a case for FP+. Never. With the exception of the absolute peak days (Christmas to New Years for example) you used to be able get on more attractions, wait in less lines, and experience less overall crowding in the park before FP+.
Good for you that you feel like you can sit on your couch, make your three reservations, and show up late. I could easily do that before FP+, did do so regularly, and I would experience more big attractions in a comparable time period with a late arrival than I do now. Good for you that with your 60 day window you can score a FoP reservation. If the old paper system were in place you'd likely be able to experience FoP multiple times in a day instead of basically once!
It's a total misconception that the original FP required you to show up early. However, if you did arrive at rope drop, you got on so much more in the first 90 minutes than you can now. Remember FP+ reservations start at park opening. The original paper FP return times didn't start until an hour after opening. That first hour of capacity was 100% dedicated to stand-by.
On an average crowd day paper FP return times would be similar to or only slightly longer than stand-by waits. This is when you could really maximize the number of attractions you could experience. That's not the case anymore. Stand-by waits are much longer and significantly so on attractions that didn't used to have FP, nor should they have it.
When it comes to making additional FP+ reservations after your initial three have been used, the availability is so much worse compared to the original paper version. The big ticket rides typically have little or no availability. When I say little I mean the return time may be so far out that it may likely be your last FP+ reservation of the day.
When there were paper FP I would on an average all day visit experience 8-10 attractions using FP. I currently average 4 to 5 in a day, unless the park is unusually uncrowded. The days of experiencing 20+ attractions are hard to accomplish.
The only positive about FP+ is for the times when I want to show up at the park a few of hours before closing. In those instances then I can have three reservations for three big attractions. This is really the only scenario where I am better off than I used to be. However, on days when crowds are light I would say it's not a benefit because stand-by lines that would be short or non-existent in the past are an issue and instead of getting on three big rides in a few hours I might have gotten on 5-8 in the same time period!
There is nothing good about FP+.