It's always nice to be able to share the best builds, combos, etc. That's what a strategy game has to have. It's not just simply playing, it has a whole mechanic, a study to become the best player every time.
There is the most tense problem, right, which is the lack of voice other than in groups, but it is a fact in very competitive games if you don't have good communication, it is impossible to work for victory.