This can be a very effective route in to corporate line and commercial roles for companies where, as previous posters have said, the strategy team is seen by the business as a talent pool and where the strategy director (and strategy team as well) has a strong 'brand' within the business. The acid test to discriminate between this sort of set up and the situations where strategy teams are dead ends is to ask what the track record of the team has been in achieving moves and particularly promotions out of the team into line over, say, a 3 year period. If a benchmark is helpful, there've been 5 promotions out of my team into business roles in the last 18 months (about 30% of individuals at this grade, roughly equating to manager level in a consultancy). So look for units where this track record can be demonstrated and you may be headed somewhere with good prospects.