Pros:

- It offers all mutations either it be new or old
- Adds new gamemodes to the main menu
- The Menu is organized. Mutation game mode is right next to the similar game mode. Versus is next to Versus Mutations, etc.

Cons:

- None really besides the fact the main menu is twice a big.....whcih doens't really count as a con at all.

- For some odd reason it crashes when I try to hit "Custom *insertmutationhere* Match" because that's how I start lobbies with maps and campaigns for by myself.

Conclusion:

Great mod.Great idea. Awesome idea from the Author. Thanks a lot from all the left 4 dead 2 community.