I used to have a team account team constantly approach myself and my boss and say I could be doing account management better. My boss started to question my credibility as Google people must be the best at Google.... so I offered them to set up their own separate campaigns rather than mess with mine. The results were atrocious. They do what the manual says to do vs what actuly works. To get the best out of Adwords you need to twist the system to suit your agenda, not Googles. Seriously get an independent professional in to manage Adwords. Try a few if you dont have experienced PPC marketing people in the office as there are many snake oil salesmen in this area. Also watch out for agencies that pitch you with their experienced guy but then put the junior in charge of running the account. Always ask to interview the person that will be hands on with the account and having direct contact to them. Adwords type platforms can be awesome when used well but you can't just throw money at it and expect results.