I've managed some time to come back and update my core mods. They now come in the form of packaged game pcc files. You use them to replace the original game pcc files and then update your game and DLC pcconsoletoc.bin files with ME3Explorer. Instructions in each package.
Another shot on Rannoch with the Tali face mod installed. As I said, as soon as the characters move, any glitchy start pose is corrected. She works fine here, her mouth moves, her eyes blink, she looks around.