Do Front Squats and Carry on Variety Days?

Right of passage was originally designed as a programe you run over and over. Is there something that needs be tweak to make it more sustainable? Do you think adding a set of front squats at the top of every ladder might be a good idea, or is it best to save squats and carries for variety days? We have a question from eli who has been revisiting louis simmonds' west side material.