The HostConfiguration or better AbridgedHostConfiguration is currently always included in the Parachain inherent. However, this isn't really needed. On the relay chain the HostConfiguration can only be changed once per session and in between the changes are "buffered".

We could change to include the HostConfiguration in the inherent only when it changed. The best would be that we set the host configuration in advance, before it changes. However, this doesn't work as the Parachain may didn't produced blocks for quite some time and thus, we missed the window to set the new HostConfiguration in advance.

CC @pepyakin