From the Cost-Worth Analysis graph it could suggest us the following key aspects:

Design tools to be reduced development time (cost)

Based on cost worth diagram, it suggested that Benchmarking, Research, and Monte Carlo simulation will consume more development time then they really worth and should be reduced. 

Design tools to be invested more development time to maximize customer value

We notice that Failure Mode Analysis is most important and we should dedicate more time to it due to its position under the curve.