Energy is the 21st century resource, we have the capacity to create so much renewable energy it's mad. An independence wales could, for example, have built the swansea lagoon years ago. Our coastline is so long, there are almost endless possibilities for tidal energy.
We also export hundreds of millions of litres of water. There's serious money to be made from that too.
Transport infrastructure is awful I agree, it needs to be bettered. Currently, the UK government are taking their time to electrify the western line (without even thinking about the valleys line). Birmingham had electric rail lines 100 years ago.
That's correct. So bad is our image, the film about Gareth Thomas has made him out to be irish! I'd recommend listening to this podcast, it's about the Welsh image in film across the world.