The diode mode check is only cheap detection, it could be false positive.The dat0 pad still bothers me, because I don't particularly know what the expected default value is for a regular dat0 connection.
My current dat0 connection value, post reconstruction is 655 on the continuity scale. The others (CMD and CLK) are above 700~780. I know that there is a connection between my reconstruction and the alternative DAT0 point, as that is where the picofly wire is soldered. But I'm not sure if the DAT0 pad is connected.
Unfortunately to check it correctly you need to take off the emmc. And check the continuity between the Dat0 pin and the Dat0 right Pad to make sure the connection from the emmc to the cpu is good.