There is no reason not to consider a multiple antenna installation. You get the flexibility of selecting the ideal antenna for each direction you wish to cover. In your situation, one option would be to use a rotator mounted DX'ing antenna (a large all-channel) as the second antenna. The majority of the household would not need to be troubled with the control of an antenna if they are connected to the 'local' antenna.
Making use of the signals from two or more antennas can be handled several ways:
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