I have very big concerns about culture. When you bring new people to a company, they tend to work the way they use to in their previous occupation. More often

I have very big concerns about culture. When you bring new people to a company, they tend to work the way they use to in their previous occupation. More often than not, a new employee will start his sentences with "What we used to do in this situation" or "that's why we did it that way at X", trying to both build up on his past experience, and to find an anchor of familiarity in an unfamiliar environment. This is normal phase and usually wears off after a few weeks/months. But for as long as it lasts, this behavior can be annoying for your current employees as they have built up their own thing, and they don't necessarily want to be reminded that there were other options that they didn't follow. The risk that you take when bringing a team of 3 to 5 people is that they go in their own corner, dismiss all the tools that already exist, recreate the work environment they are used to, don't mix well at all with other employees, etc. And what you get from people being used to work together, you loose in management pain. I think the usual way of hiring one person, who then can refer to the good guys in his previous team is a much sounder approach, as it lets time for the culture to adapt.