If you buy one of the S7/S9 preloaded models, the camera quality is likely to be quite poor, especially under low light. This is the state of affairs under microG (/lineage), as Samsung ROMs use a proprietary camera library that doesn't carry over. Source: My main phone is an herolte (S7), as the Exynos variants are one of the few phones with separate baseband and application processors.
This should be prominently mentioned on the product page, as it's just going to cause disappointment, regret, and ultimately backlash. Really they should choose an additional model with good camera support to refurbish, and offer the choice as an explicit tradeoff (better quality photos vs better baseband security).
(And if I am completely wrong here because they've somehow fixed or sidestepped this, please correct me. It just doesn't seem likely)