Valhalla Partners co-founder and former New Enterprise Associate partner Arthur "Art" Marks loved a lot of things — the University of Michigan, fly fishing, tulips and sailing, to name a few. He also loved the process. Marks, who died Tuesday at the age of 74, helped use his commitment to processes and operations to professionalize and scale a still wild venture capital industry when he joined NEA in 1984, said those who remember his work. “He really understood how to scale not only businesses,…