IMO making any HT or Audio only system family friendly (one button ON/OFF) really makes it inviting to use. A cable or after market remote can make this possible along with an amplifier and other components that use low standby power.
Personally, I went from 5.1 to 7.1 and I would never go back. JL Audio and Velodyne offer some in wall subwoofer options that would be worth a look. I've yet to hear an in wall speaker system that worked for my ears but you may find some aim-able models that work for you.
If I were building from scratch in wall cable conduit and AC receptacles at the speaker locations would be a must, There are audio related building materials and techniques that are worthwhile to look into.
Have fun with it and don't rush it.
Personally, I went from 5.1 to 7.1 and I would never go back. JL Audio and Velodyne offer some in wall subwoofer options that would be worth a look. I've yet to hear an in wall speaker system that worked for my ears but you may find some aim-able models that work for you.
If I were building from scratch in wall cable conduit and AC receptacles at the speaker locations would be a must, There are audio related building materials and techniques that are worthwhile to look into.
Have fun with it and don't rush it.