Barcelona is extremely underserved by long haul flights. There is a need for non-stop services to Latin America and North America. Connecting via Madrid it´s not a obligation for Barcelona tourists and passengers.
Here are some of my requests:
BCN-EZE daily service IB/AR A340
BCN-GRU 3x week by JJ/IB A330/A340
BCN-SSA weekly RG 767
BCN-MEX 4x week IB A340
BCN-MIA daily IB/AA A340/777
BCN-HAV weekly IB 747