Before 3.0 was released I was very reluctant towards the new Engineers.
I was worried about getting the huge number of mats required.
I have now engineered quite a couple modules and I must admit that I prefer this system far beyond the old one.
You know you'll leave the engineer with a guaranteed better module and the Mat Broker is a fantastic way to get you the most difficult materials.
One thing that I think is a bit meh is the steep conversion value at the Broker.
Overall I think the new engineering is a lot more fun.
Sandy S. said himself during one of the Beyond Live Streams that the Material Trader exchange is designed to be used TOP DOWN, not Bottom Up.
Focus on collecting that handful of G5 mats and a few of the most commonly used G4s and don't worry about the rest. Just (1) G5 Mat can provide a considerable amount of lower grade mats.
Too many people are using this system backwards and wondering why it feels broken.