There's only one thing in any way attractive about the proposal in teh OP.
Both of my state's senators are women. They are also both idiots. They are solidly entrenched, corrupt, and have a massively inflated notion of their own importance and significance. They use their positions for their own personal gain, to the detriment of the voters that they are supposed to represent.
This isn't to say anything about women in general. Just that the two specific women who have managed to become senators from my state are idiots.
The OP's proposal would mean getting rid of one of them and replacing her with a man. If any state can come up with a male senator who is as much of an idiot as the two women who hold these positions, it would be my state, but at least this would also give us a shot at getting one senator who is intelligent and competent and who understands that his job is about representing his constituents rather than about representing his own selfish interests.