Pros
TWO NIL is 100% transparent and its a main reason why I joined. The executive management team understands that being focused on the client's bottom line before their own translates to long term success and client retention. Agencies (and more-so the struggling DR agencies) must adopt a client-focused approach if they want to attract and maintain customer acquisition focused brands of the future. I was sick of being pressured at previous agencies to sell proprietary media products and services that contained high margins and steered clients down a path based on the economic interest of the agency. I joined in the middle of 2015 during the so-called "re-org" and have been very happy with the direction, expertise and insight that the management team instills across the agency. Prior to joining TWO NIL I was considering leaving the agency world altogether but this team has breathed new life into my advertising career.
Cons
There's still a start up atmosphere, but I happen to like it. The open floor concept may not be for everyone, so if you are used to your cushy office this won't be the right fit.