Marshal Lion has a roadmap, of course, it should be adhered to, but the team should also be ready for market changes and, if necessary, make appropriate adjustments in the promotion of the project.
I believe that everything should go according to plan, the road map should be planned for several years ahead.
I'm not saying the project shouldn't stick to the roadmap. The project development plan must be carried out. But it is impossible to foresee everything so the team should be ready to adjust something if necessary.