We've already been hosting a Qualcomm PSDS cache since March which we're in the process of integrating:
https://github.com/GrapheneOS/grapheneos.network/commit/6e213e84c881d6afc64c3c54a8ea8aeab03dcb9a (https://github.com/GrapheneOS/grapheneos.network/commit/6e213e84c881d6afc64c3c54a8ea8aeab03dcb9a)
xtra-daemon setting User-Agent is entirely unnecessary so we'll stop it from doing that instead of only preventing it from including any hardware IDs.