Would be fun to change some game rules during play for more dynamic gameplay. For example, turn on/off team radios based on whether a team obtained a certain area/item.
Other game rules that could be dynamic are:
Teammate beacon
Opponent beacon
Max health
Max shield
Auto heal
Auto-respawn delay
Opponent health bar
Teammate health bar
Spawn main hand equipment type
Spawn off hand equipment type
Infinite reserve ammunition