Sefautil is a nice tool for configuring call forwarding, delegates, group call pickup, etc. But it's quirky, lacks good reporting and error handling, and just plain difficult if you don't use it often. Having standard cmdlets to perform these tasks would be a blessing.
At this moment the default 20sec timeout for call forwarding could be managed by users or via SEFAUtil.
I think could be more practice if this (and some other call forwarding option) became Global Option, managed by a new Policy. The administrator could set it for all, or for some Group of users, could set it mandatory or not and so on....