1.2 has brought a number of new incentives for aliens to work together as a team. Healing Basi's, nerfed Tyrants, etc. Now the largest disadvantage to teamwork on the alien team is how everyone gets in the way of each other. This causes a lot of frustration and anger amongst the team, clearly not a goal of the game. 2 dragoons is not always better than 1, and 3 get in each others way. Having a dretch around can break a pounce that would have killed a human. I think that the collision box for every alien should be reduced. Preferably enough so that dretches can walk underneath dragoons and tyrants without worrying about getting in the way. This would encourage mixed unit tactics and remove a lot of headaches caused by blocked escapes, pounces, or tramples.
Also, if it's possible, the original, larger, collision sizes should be used when a human tries to get past an alien, to represent trying to block them compared to trying to move aside for a team mate.