Make the default entry (01 Asset Failure Low Impact) a customer modification owner so that it can be updated, made inactive, etc. You could make the field on the asset location required so they have to set up at least one.
The same could be done for the work priority flag. Had a client that did not want to use the 09 seeded value and there was no way to disable it. You can also make it required on the activity so the total risk priority can still be calculated.