Imagine that you have two employees with complementary skills (one excels where the other sucks, and vice versa) working on the same project. They will probably

Imagine that you have two employees with complementary skills (one excels where the other sucks, and vice versa) working on the same project. They will probably enjoy it a lot, because from the perspective of each, they can do the "easier" part (easier for them, than is). And the quality will probably be high, because each is working on what they know best, and what they enjoy. However, from the average manager's perspective... What happens if one of these two takes a vacation, and you decide to put in the sprint something that the other one sucks at? (Planning? What planning? This is Agile!) What happens if you later decide you could save some money by moving one of them to another project, and leaving the other one to handle it all? Also, what if one of them asks for a raise?