Imo, there are two reasons new players lose most:
1. They sucked at vcoh and then continue sucking at EiRR (don't how to micro, when to retreat/attack etc.)
2. Although being quite good at vcoh, they have never played an EiRR like game before and therefore don't know how to set a good company up.
Imo to combat problem nr. 1 you can't really do much to help someone, but for nr. 2 you could show some 'example companies' so that people get an idea how to build a company which suits the gameplay in EiR...
agree on 1 but for 2 example companies dont really show much. its all trial by error when making builds. when i 1st started i maxed out every call in at 25 lol. then i realized that i needed to adjust callings per need. that also translates to playing style and doc that is being used. theres many factors that go into it. even know i switch builds early,mid and maxed out co. Its gradual and even when you think you have a good build you still have changes to make.