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.
Deviation from the plan can be regarded by investors in different ways, it would be better not to do it. On the other hand, it is impossible to predict everything and if the adjustment of the plan will benefit the project, the team should probably do it.