as i see it, the typical codom and dominant recombination game will help with all the recessive projects. breeding these will give you choices for multi-gene BPs to hold back.

and when you then have a recessive project, you can breed a visual recessive to one of your multi-gene codominant/dominant animals, and get nice 100% hets with extra genes. and these are the way to get additional new genes into a recessive project.

so in order to continuously keep advancing your recessive projects, having the standart codominant and dominant morphs and combining them into multi-gene combos will be quite helpful.