The condition that was provided was just a mere example of the endless others (whatever the husband/wife deem right and on a mutual consent’ial basis) that can be utilized at the time of signing the contract. It may look tough/complicated to some but it may just come as a pleasant and worthwhile experience to the one eventually benefiting from it.
So according to what I understand, providing/delegating the right of talak to the wife is completely acceptable and hence if a wife asks for it. She’s free to have it. Regardless of all the complications involved.