[e_i_pi_2]

This is something we actively try to take advantage of at my company - we know that we've grown comfortable with architecture that may not make a lot of intuitive sense, so when we have new people join we try to make a list of confusing concepts so we can try to clean them up. In the ideal case the new person is able to do the cleanup, so we get a more intuitive design and they learn the surrounding architecture more along the way