Ah yes, If they did away with Fast Pass and Boarding groups. Went back to the "Good Ol days"..... Well, everyone would be in lines for the whole day, Longer lines for the most popular attractions and shorter lines less thought about attractions. I do remember waiting in 3 hour long line for Splash Mountain in DLR, during summer, hot day, on debut year of ride. I remember wishing I could stay at the DLH just so I could have the special early start time for DLH guests only. I can remember rope dropping for the coolest rides. Once the park filled up, I would do the lesser rides, for the shorter lines, before the heat cranked up, I would stand in a long line 90+ and ride a fun ride, then look for AC rides or things during the afternoon heat. Then I would do walk on rides during fire works or parades, and the last hour or so of the park when every family is heading home. A true open to close Park Commando. Then, DLR was a park sized that you could see everything in 2-3 days. WDW parks are larger, and have more stuff. Epcot alone, is a 3 day park to see most things, and not everything.
The real What do you think would happen if.....you could afford to stay on Disney Property for an entire year?
I myself have thought about this, and I could go one entire year at WDW. Each of the parks can be an entire week of exploration. Add in the water parks, and all the hotels to visit. I could spend and entire year and not ever be "hohum" another day at MK. Unlike the videos that just give number for value, moderate, and premium year stay I would shake it up. I would start in the cheapest place for a week and then keep upgrading. Say start at the all stars, then pop, then AoA, from there hit into the various moderate, with the premiums, finally ending up at the flagship resort, Grand Floridian. We spent a half day alone just on main street, forgetting there was an entire park to see. Granted my wife's a shop-aholic so we can spend hours in just one gift shop, but just looking at all the theming, and playing sorcery, we hadn't left main street all morning on our first day.