One thing I wish they had done with the much larger address space is make it easy for an individual to get their own block of IPv6 addresses. Letting enthusiasts experiment with their own address space seems like it would help with knowledge / adoption.
I’m a network engineer by trade and think that would be cool, but I don’t think it’s a great idea to have a bunch of amateurs all of a sudden participating in BGP for numerous reasons. It’s certainly possible for an individual to setup a LLC, get an allocation from ARIN + AS number, order a business ISP connection w/ BGP and get an adequate router. It’s a high barrier of entry and won’t be cheap. Making that easier will likely lead to more widespread BGP issues (intentional or unintentional), filling up router TCAMs with even more prefixes, etc.
There’s already communities out there for hobbyists to play with/learn BGP on private networks over VPN tunnels if you really want to.
DHCPv6 Prefix Delegation. If you're a business customer, you get a larger allocation seemingly depending on the size of your IPv4 static block. I've been given /56 and /54 from their business service. It's quite nice.