Don't get me wrong on MM+, I can totally relate to people who find it a PITA. We used to game Fastpass at Disneyland to the maximum allowed extent, which meant we usually held fastpasses for California Screamin, Soarin, Tower of Terror, Space Mountain, Indy, Splash Mountain and Thunder Mountain all in a single day. And when they didn't use to enforce return times, that meant we could just wait until the last of those came due and have our own little e-ticket adventure with no queues for several hours.
Still, for our current visiting patterns, MM+ is a godsend. Even when out of town friends/family/colleagues visit, they seem to appreciate MM+ especially when we are there to guide them through all of the red tape associated.
Disneyland's Fastpass works well for the 20% of hardcore people that exploit it. I think there's still a latent anger among WDW people that they can't hold 5 or 6 pastpasses for E-tickets anymore even through that was always deeply unfair for everyone else. For anyone arriving at the parks after 2PM on a busy day, it was all but useless. It's also useless to people who can't game it properly and end up with a single Dinosaur fastpass that comes due 8 hours away and don't get another in 2 hours.
All of that applies to DLR too, and I can see a similar bitterness when those people won't be allowed to game it much anymore after their maxpass stuff rolls out.
Still, I think the system benefits a lot more people now than the paper system did. Iger's said as much on multiple occasions stating that overall usage of the system is significantly higher than the old one. Then again, I just got done "educating" a family that had been at WDW for 4 days and asked how much my band costs to cut in line. They were totally clueless and kept saying "but our friends said it costs extra". I kept repeatedly explaining MM+ and Fastpass+ to them while waiting for Rivers of Light and after 10-15 minutes I sort of gave up on it. For people like that, no system is going to help them.