I've been wondering about this myself. I haven't done a new house in a long time, or extensive remodel. I think my last few jobs, I ran CAT 5 and coax to the outdoor boxes for the cable & phone people to connect. If I were doing a project, I would be sure to see what jacks are being used. I found out the hard way that CAT 6 cable isn't compatible with CAT 5 jacks. Or was it vice versa? Been a few years.
Sleeving down a stub is good but I'm sure no matter where you stub down, the future need/desire will be on another wall. I guess that meant stubbing down from a box and putting on a blank cover?
Many use the Leviton or ICC low voltage panels that come in a variety of sizes. Install it in the same area as the electrical panel, utility room, etc. Then home run all the CAT6 and RG6 cables to it, including spares to attic, etc. Run one or two CAT6 and RG6 from the panel to the outdoor DEMARC location. A patch panel can then be installed inside the low voltage panel, or an Ethernet switch, depending on what the ISP provider does in that location. They may even install the router in it. (Use the plastic type panel if a WiFi router will be installed)
Depending on the size of the home, keep the CAT6's length to 100meters. Doing the CAT6 with keystone jacks in the walls, and a patch panel in the low voltage panel, or even by itself, eliminates using RJ45 connectors on the cable ends. Its all punch down connections, unless connecting to devices like access points, IP cameras, etc.