privacy by default, domains, dexes with deep enough liquidity. you can figure out which ones. if the bitcoin devs never got sidetracked by this lightning garbage and if the community didn't push so many people away we'd probably have all of that on bitcoin already. bitcoin's biggest competitor narrowly escaped nonexistence over it. can you imagine a world where bitcoin devs didn't start huffing paint and ethereum simply never got created?
Discussion
I do agree Lightning was over-hyped. It has also taken forever to implement the incremental changes to make it more scalable. And even then, most honest devs knew then what people are learning now: Lightning doesn't get the whole world into non-custodial Bitcoin.