I think most of the bases have been covered here. Future-proofing with cable isn't really possible in the larger sense. All we can do is plan for what we may do in the next 3 to 5 years based on what we think the current trends indicate. On that basis then, the idea of making it easy to change wiring when the time comes really is the best plan. I'm glad to see that recommendation has already been made.
RGB SCART, Component, S-video, DVI, HDMI for 720p, HDMI for 1080p have all fallen by the wayside. Current UHD HDMI cables may well go the same way in the 5~8 years if 8K gets any traction.
Ethernet cable has gained in significance for data networks and as a connection between balun boxes.
The one that has stayed surprisingly current is the humble RF coax cable.
Performance tips to reduce the risk of interference:
- Keep mains cable away from signal cables by a distance of 10" or more
- use good quality RF coax (Webro WF100 / Triax TX100 / Labgear PF100); the shielding is superior to basic 'RG6' and that will help with minimising the effects of radiated interference from HDMI cables