For me, elastic waistbands are helpful. They make sure my diaper stays snug without getting too tight, and also help the diaper conform to my body shape. Of which helps contain any smells. They also help by allowing me to pull down the diaper for sitting on the toilet, then pull them back up into place. All without having to redo the tapes.
I continuously dribble and can also attest to the standing leak guards helping, a lot. They reduce leaks around my legs, and really help to reduce leaks while sleeping on my side.
I feel the premium diapers do have enough capacity and padding to take multiple floodings or all day dribbling for 12 hours (or more), so I'd say they are good where they're at. A few even go way beyond what's needed, but they're clearly for those who want to feel the bulk between their legs. Not really aimed or priced at those who want a diaper that will last through a work day.
Wetess indicators are a waste. ANY decent caregiver will be able to spot a diaper that needs changing from across the room. Or smell it. And we certainly don't need them for ourselves. Plus, they only indicate when when the diaper has been first used, not when it's nearing any sort of capacity. So they don't even do any good. Indicators need to be left off.
Tapes and plastic backing material could definitely be better and stronger. It's ok enough as is, bu5 just barely. I'd love to see getting rid of second chance tapes AND without needing a too-small tape landing zone. Three tapes per side would also be a big improvement. Though I'm sure all of that would mean more expensive diapers, which almost nobody wants. So that isn't likely to happen.
You did overlook colors and prints though. While completely secondary to their function, I see plenty of request for more colors (especially blue or light blue), and non-babyish prints. Personally I like Crinklz though.