Perhaps the fact that we do not need to speed up construction, but only to get rid of the burden of research? Have you ever played C&C3? Research there does not hang like a dead goose and does not burden the gameplay. And the presence of units there depends only on the presence of the desired building, and not on research, which devours all the accumulated resources. Not only me, but also many other players on other gaming forums consider many prices are too high. Instead of enjoying the result of the research, players have to focus again on collecting resources in order to cover the costs and buy at least 5 "red" soldiers. By the way, the unit preparation time is also too high.