I agree with most of what you say but he does allow too many crosses into the box from left back.His attacking is what sets him apart yes. But his defending is conversely overlooked. He's as good as any other LB for England
Obviously it's all about balance and the other parts of his game massively outweigh that deficiency. He is however much better at defending that some give him credit for. He's the best left back I've ever seen play for Everton and I can remember the mid eighties.
Galloway flashing his knickers at us shouldn't confuse anyone that as soon as Baines is fit he is right back in the team at left back.