I would just like to add my voice to this concern. It seems to me like some considerable thought was put into minimizing wasted time in most other aspects of the game in contrast to BL2 - far less wasted space without combat, a vastly improved fast travel system, and the movement improvements - so the levels with a single fast travel/sell point feel like a dramatic oversight. So far, fixing this single issue would bump this game from an 8/10 to a 9/10 for me.