I think there should be a new rule on infection that is: No teaming if it causes a disadvantage to your role. (The role word could be changed to a team or something not sure). But I think this should be a rule because people have been dying recently because they are in a certain spot has humans, then a few other humans that are friends with a zombie get in the way of the bow so you cant shoot causing you to die. This has happened to me and im sure it has happened to other people to, also make it the same for zombies who are blocking humans from other zombies bows/eggs/swords.
Neutral, cross teaming with zombies can be allowed but blocking a person from protecting himself is more of trolling and should be banned for. ;)
No support. This is very confusing (my opinion) and a sudden change to the rules would be very chaotic to the infection server. See you on infection! - that dood on infection<3