Pre-round Planning
Before the round starts, each team could have, say, a minute to plan out how they're going to play out the round. This time would be spent on a screen showing the map and its objectives. Best case scenario, the map has some drawing method built in to visually plan.
It'd be easy to implement this, simply combine the code from the join lobby and the UI of the objective menu. This would be best reserved for competitive servers, so a server option should be made for it.