As you may have noticed through the years, the specifications of Ethernet cables have been improved to allow for faster and faster speeds without impacting the capability of reaching good distances (around 100 meters). Lots of tiny details impact how the cable can provide such a good signal impermeability.
While nothing will stop you from trying what you want to do if you do it well, don't be surprised if it reduces the maximum achievable speeds or causes the connection to become unstable in certain unpredictable circumstances.
Note that the RJ45 wires are twisted pairs, unlike your schema which appears as a straight cable.
Also, I couldn't figure out any good reason for such an unusual connection. There is absolutely no benefit for the trouble you'll go through just to make a bad connection in the end.