It would also be useful for organizations to at least privately know the tiers of past grants to them, to have a better idea of how likely they are to be funded in the future. (Edit: Sanjay said this.)
If organisations were privately informed of their tier, then the additional work of asking (even in the email) whether they would want to opt into tier sharing would be low/negligible.
Of course people may dispute their tier or only be happy to share if they are in a high tier, but this should at least slightly go against the argument of it being a lot of additional work to ask people for consent for the public list.
It would also be useful for organizations to at least privately know the tiers of past grants to them, to have a better idea of how likely they are to be funded in the future. (Edit: Sanjay said this.)
If organisations were privately informed of their tier, then the additional work of asking (even in the email) whether they would want to opt into tier sharing would be low/negligible.
Of course people may dispute their tier or only be happy to share if they are in a high tier, but this should at least slightly go against the argument of it being a lot of additional work to ask people for consent for the public list.