A quick companion piece to this would be a bunch of cvars that differ between campaign and versus. I've collected all the ones I can find. Um, how do I do this...
Code:
director_no_human_zombies 0
sm_cvar tongue_break_from_damage_amount 300
sm_cvar tongue_choke_damage_amount 5
sm_cvar tongue_cone_start_tolerance 0.004999
sm_cvar tongue_dropping_to_ground_time 0.500000
sm_cvar tongue_hit_delay 15
sm_cvar tongue_kill_smoker_on_detach 0
sm_cvar tongue_los_forgiveness_time 1.5
sm_cvar tongue_no_progress_choke_early_delay 1
sm_cvar tongue_miss_delay 3
sm_cvar z_exploding_splat 0
sm_cvar z_gas_limit 2
sm_cvar z_hunter_limit 2
sm_cvar z_max_stagger_duration 0.899999
sm_cvar z_pounce_damage_interrupt 150
sm_cvar z_spawn_safety_range 200
sm_cvar z_lunge_distance_damage 1
sm_cvar z_pounce_damage_range_min 300
sm_cvar z_pounce_stumble_radius 160
sm_cvar z_scrimmage_creep_rate 100
sm_cvar z_scrimmage_creep_delay 0
sm_cvar director_race_mode 1
sm_cvar z_ghost_allowed_in_battlefield 1
sm_cvar commentary_available 0
sm_cvar z_ghost_los_expected_progress 2000
sm_cvar director_swap_teams 1
If you put this in a config file or whatever, then you won't notice much of a difference between a faux-versus campaign map and a real versus map (except for invisible walls and crashing at the finale if you win). Also note that there may be variables I missed due to not knowing how to get an accurate cvarlist and the fact that I performed the compare about one patch ago. Cheers!
edit: oh yeah, these are versus values. If you're using a cfg file and not a plugin, I'd suggest making it separate from your server.cfg so you can trigger these changes with a single commentable exec campaigntoversus. Or whatever.
edit2: I updated these cvars to their most recent values, and added some.