I know HCL gets a lot of hate around here but I find just dandy and I'd rather write HCL over YAML any day of the week.
Also to just put another thumbs up for Nomad because it's been absolutely fantastic for us and has been so much easier to manage and deploy. We've begun testing edge deployments with it as well and so far looks very promising.
Consul and Vault are also two Hasicorp products I can't live without at this point either. Vault is probably one of the first things I deploy now.
Anyway rambling, I think a lot of people just immediately jump to Kubernetes without really ever giving Nomad a look first.