Existing HA level is at VM level. It means, if the VM is down (or the host on the VM is running is down), it will be booted on a working host in that pool.
For hyperconvergence, it's far from being a miracle solution. It costs a lot of thinking, planning and maintenance (and careful usage of it).
Like HA in the end.
So before asking for advanced features, it's good to think about what you really need.