I'd like to see this ability to use wget as well. It would be much faster than downloading to my workstation and having to use scp and/or jump hosts in some cases to transfer files around.
That being said, I have been able to drop install and app files on our deployment server in the static folder which I can access via wget from other servers.
Any folders/files placed in $SPLUNK_HOME/etc/system/static can be accessed via the following URL which you can call via wget or curl.
https://your-splunk-server.com:8089/static
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