Domains are 1) very hard to get right (there needs to be multiple passionate engineers working on the infrastructure) and 2) not useful at all until there are people who can access them "by default".
KeyID will deliver on the promise of Keyhotee while work on getting domains "right" continuous behind the scenes. I'm in active contact and/or various stages of development with many leading thinkers in the space - DNSchain, meowbit, even an NMC core dev.
Domains will take weeks whereas mail is almost finished and reputation, identity, etc can be done in days by anyone who knows some simple JS, once I set up the key graph backend.