This is all about lifestyle and aesthetics.
If you are having a system installed locally in the room, you want a good location for all of your gear. If this is a family room, then are you doing surround sound? Speakers in walls or ceiling? Ceiling really sucks, walls are better, but bookshelves or floor standers are really the way to go.
On a more generic... If installing in the room, do you have the ability to run cabling to the TV location easily? If the TV is over a fireplace, likely you do NOT have this capacity! This is a long term issue. You MUST have conduit run from the equipment location to the TV location, and that conduit should be at least 1" internal diameter, preferably 1.5". The orange Carlon conduit is most typical for low voltage of this nature. I use it regularly.
But, if you have to have conduit in place already, and the room doesn't need the equipment right in it all the time, then why not remote locate the equipment? Put it in a storage area in the basement which can have a proper audio/video rack in it. Maybe think way outside the box on things. This can put your Roku and cable box in that location, and maybe a small Blu-ray player in the room, or a local HDMI connection for a game console under the TV. It will cost more, but long term will look really nice.
Now, here's the deal. If you have an in-room equipment location for local devices, that location needs conduit as well. That way you can add/remove gear as you need it.
An IR repeater system to the TV location gives easy control of your devices from factory remotes, and products like Harmony remotes can give you an all-in-one solution.
A lot more needs to go into wiring and I STRONGLY recommend that as much equipment that can be wired to the network be hard wired. So, your game console, media streamer (Roku/AppleTV), TV, etc. should all be hard wired to the home network if at all possible. Run this cabling now if the home is under construction. Add a wired network jack in every room of the home if you can.
I do run a remote and local system in my home for the family room. Local gear is in a closet right next to the family room and it houses the PS4, Wii, and Blu-ray Disc player. It has cabling that runs to the basement about 40 feet away. From there, the basement has a Denon receiver that feeds 3.1 audio to the speakers in the room and sends HDMI back up to the TV. I don't have the basement finished yet, so I have retro access, but before I finish the basement, you better believe that conduit will be in place to the family room rack and the family room TV locations.
I love remote locating equipment. It really keeps the room super clean.
