There is a special type of questions marked as "community effort". For unobvious reason there is not possible to vote (or edit) on the question, since question is locked. But on the same time voting and edits are allowed on the answer. I see no reason why the voting is forbidden for the question. Can we make such questions vote available?
In my point of view community effort questions are not ordinary locked posts when voting/editing is prohibited according this old answer from former SO employee.
In particular this limitation on voting prevents marking some questions as "community effort" by ruSO moderators: Пометить вики-вопросы с предполагаемым единственным ответом нужным статусом