Dodgers’ loaded farm system is about to become a roster headache

The Dodgers could have used a player like Miguel Vargas this year. Their lineup was starved for power at times and Vargas homered 31 times. Their team was old and Vargas was a 26-year-old All-Star. Here’s the irony: Just two years ago, the Dodgers had Vargas on their roster. But the Dodgers didn’t have an…