Having built a number of headless Shopify sites in Next JS this is slightly concerning, I was imagining a port over to Hydrogen at some later date with minimal

Having built a number of headless Shopify sites in Next JS this is slightly concerning, I was imagining a port over to Hydrogen at some later date with minimal changes rather than a total replatform. Of course a replatform wouldn't be necessary if Shopify would help out by - for example - not force logging out (and otherwise breaking checkout) for users that came from a headless store.