Horde builds with multiple shelved changes

Currently, Horde supports specifying a single change to unshelve when starting a build.

I’m proposing to allow the user to specify multiple changes in such a way that the user can run builds with a combination of changes without having to craft a single shelf into their P4 workspace.

Under the hood, Horde would unshelve each shelf and resolve (merge) changes to files that are affected by multiple shelves. It would raise an error in case of conflict.

Is this functionality already on the horizon, or is there an appetite from Epic to implement this?