I think I do. There are some security issues with this idea. Running commands as an administrator (i.e. root) is dangerous, do you allow it? Run commands as a lessor user? Also, from my perspective, it's not totally clear how something like this should work. File copies can take a long time to finish, do you block the web interface during this time? Allow for interrupting the operation while in progress? What about errors and recovery? Do you expect undo?
Then there is the problem of increased support costs. When you add a complex feature like this, you add to your future support costs for user questions, debugging and things like that. Not to mention that it really kind of changes the complexion of what Unraid has traditionally been.
However, that doesn't prevent *somebody* from doing this very thing as a plugin, or docker to support the wanted features. In that way, the system owner can decide what security risks they are willing to take, which container or plugin meets their needs. Given the available third party options, it seems to me that the Unraid solution is better off without this feature.
At least that's how I see this.