What factors lead you to offer non-ablative, but still aggressive, palliative radiation (i.e. something between standard palliative and SBRT regimens) to patients?

My impression has been that the decision to offer aggressive palliation in this "gray zone" of dosing is both stylistic and loosely dependent on a variety of factors including performance status; lesion size, number, location; and systemic therapy outlook. I would love to know if anyone uses more objective criteria in this decision process.