For starters, put sales and marketing together. Now there's a concept. The ultimate marketing metric "Did they give you money?" But if you don't converse with your market, they will stop. So you need to swing between both sides, all the time. Easy to say, hard to do.
Next combine engineering and support. It seems to make sense that the people who have to answer the phone also have the ability to make those phones stop ringing. But someone name a company that is doing this. I can't think of any off the top of my head.
And talk about productive meetings. All you need to add to the mix is operations. Three groups can make a company great. That's all.