Pros:

-L4D1 bots navigate well
-Gives user usefull commands to control both L4D1 and L4D2 bots

Cons:

-If the player or L4D2 bots get incapacited they can't be helped up
-Slighty Laggs the game

Conclusion:

A great and funny mod that allows you to wander around with the L4D1 crew, but, as listed, if you or the L4D2 bots get incapacited you can't be.

I'll give this mod 4 stars, fix the Cons listed and it will be a perfect mod.

(My bad if I did any English mistakes)