yes i also think this is needed
when you have to prove that you reserved the village because someone says he had reserved it
but i also think this for other reports..i dont see any reason why you cant you forward them? there really can be situations where this is needed
imagine sitter-reports like "the account sitting by xy has been ended"
when a traitor was the sitter of 1 account and then attacked an ally from there, the ally could say eighter this account is kicked out of the tribe and may be nobled, or the ally is gone and you have war
but when you can prove that this was another player as sitter in the account, then it could be ok for them to just kick and noble the real traitor and not the poor player who set the wrong player as sitter..so this player can then go on playing and wont lose his account^^
or just about market reports...sometimes you have to pay "reparations" to someone else, maybe because you attacked the wrong player by accident^^ or because of treaty which says you should
and as you cant forward them, you cant prove to others, like the tribe leader or so, that you already sent the ressources
or another smaller thing: the friends-reports, like "you deleted xy out of your friends list", you could want to send this when someone accuses you of having an old friend in the friends list and taking profit from knowing when hes online after war between your and his tribe started..but you cant
so why not making just all sendable?? as it was some time ago?? there it also worked..