Some flavouring is probably ok at least until cigarettes are far less accessible than they are currently, but they could do a lot around how they are marketed. Plain packaging, plain names & non-flowery descriptions (i.e. “Strawberry & Apple - fruit, medium tart, medium sweet” ok, “Dragonz Dreamz - juicetastic swirls of tangtastic crunchy orchard apple and plumptious sweet strawberries lifting you to a magical realm” not ok).
They probably don’t need to be prescription only, as you want people to find it super-easy to switch, but there’s a decent case for making them pharmacy only. Maaybe allow off-licenses to sell them, though this rather reinforces the sense of a fun recreational thing & they’d end up being bought to try at parties.
Some flavouring is probably ok at least until cigarettes are far less accessible than they are currently, but they could do a lot around how they are marketed. Plain packaging, plain names & non-flowery descriptions (i.e. “Strawberry & Apple - fruit, medium tart, medium sweet” ok, “Dragonz Dreamz - juicetastic swirls of tangtastic crunchy orchard apple and plumptious sweet strawberries lifting you to a magical realm” not ok).
They probably don’t need to be prescription only, as you want people to find it super-easy to switch, but there’s a decent case for making them pharmacy only. Maaybe allow off-licenses to sell them, though this rather reinforces the sense of a fun recreational thing & they’d end up being bought to try at parties.