Datasource to monitor Windows Services/Processes automatically?

Yes, using batchscript will definitely improve your performance since it should do one fetch per device, instead of one fetch per service.

So, your discovery filter is set to include only services where the start mode is "Automatic". And you've got another discovery filter that excludes the services that no one cares about. If that list is the same and never changes, no need to put it in a property, it's just over-complicating things.

So, it's working?  Did you make a version for the process monitoring?