Pros:

Bots can use melee
Prioritize healing the player over themselves*
Bots....actually, just read the description, it's every thing that can be called a Pro.

Cons:

They also will use pills, then promptly waste those pills with a first aid kit. This is a VALVe problem itself, so no point deduction.

Conclusion:

This instantly improves any game, and it is amazing.

Pros:

Fake Finale! With finale-esque items spawns and constant hordes!*
VIRGIL!
Atmospheric!
Great Dialogue!
Praise followed by"!"!
Custom Graffiti!

Cons:

*The team can easily stock up on lots of great stuff from the finale event! And be set for life!
Even without captions, it's easily to tell that the dialogue from the fake finale was taken from multiple rescuers. John Slater, the Parish Soldiers, etc.
The Magnum was mysteriously Missing!

Conclusion:

Great Great Great. You have my respect, for what it's worth. Although, considering I'm no one important it's probably only enough for the bus ride home. Also, what were those wheelbarrows with the silhouettes for?

Pros:

PORTAL 2 EASTER EGG* with voicing
Funny dialogue,
Tank skins
Great finale**
Custom melee weapon
New textures and props
Good gauntlets, crescendos, and custom panic event***
Long maps, but not tedious.
Awesome mini-finale****

Cons:

*You NEED to either play with cheats on or have 4 player co-op to complete, and therefore leave, the Portal 2 Easter egg area
**It's not always clear where you need to go in the Finale
***You can shoot the alarm triggered windows out from a distance, without setting off the alarm.
****The bots will usually get off the train to help you....while it's leaving.

Conclusion:

This is one of my favorite mods, there was little to find fault with. I really enjoyed this, and this conclusion is going to be short because now I want to play it some more.