Feature Request: Suspend Source

I would like to keep an existing source's setup, but not actively use it.
This would be especially useful for testing/swapping TVE sources (like moving from Fubo to YTTV, for example)

Agreed. This topic came up recently too with regards to custom M3U's. @tmm1 logged it in as a feature request.

Temporary work around is create the source. Then hide the source at the client level.

Its not same as suspension of a source. But it may work for your needs at the moment