Ok, sorry for me being inactive on this for a while. I'll try to play around with this map again on singleplayer.
The map seems alright currently except for a line of red wool (instead of blue wool) above the doctor's viewing place. Maybe a few aesthetic updates but otherwise you're fine. I think you could add some new gamemodes such as 1 doctor 3 infected and 1 party person but the infected don't know who the other infected are so its a bit of a mess (but it would be fun). Also you could try to make your map name have colours so it looks good (you can search up how to do this. It's quite easy).
P.S Your map name says 'World' instead of Doctors vs Infected' but your folder name is fine.