HEAT oil in medium skillet on medium heat. Add shrimp and chile powder; cook 3 min. or until shrimp turn pink. Stir in enchilada sauce and 1-1/2 tsp. cilantro. Remove from heat.
MIX avocados and cream cheese in medium bowl. Add beans, juice from 1 lime, 2 Tbsp. each onions and cilantro, and salt; mix well.
SPREAD sour cream onto bottom of shallow serving dish; cover with layers of guacamole, shrimp mixture, remaining cilantro and onions. Cut remaining lime into 6 wedges; squeeze 2 lime wedges over dip. Garnish with remaining lime wedges.