time for some snipping

Refusing to put one-day travelcards on Oyster in general, not
necessarily by the means suggested above, seems to be pure
obstructiveness. If the argument works for period travelcards, it
works for one-day travelcards.

But the day ticketing product on an Oyster card is daily price
capping, whilst there is no weekly or monthly price capping product -
and as has been discussed before on here that would be practically
impossible to implement.

Please tell me what on earth would be gained by being able to load a
Day Travelcard onto an Oyster card?

Daily price capping is not in any sense equivalent to a day
travelcard, because it isn't valid for the same set of services. It's
really simple.

So, given that it's a totally different product for which a demand
remains, why on Earth shouldn't it be stored on an Oyster card?