A really good idea to keep students learning the harder more complex topics is a new style of grading. This new style grades students on multiple areas of the assignment and not just an overall grade. For example in group projects the areas can include collaborative behavior, teamwork, presentation, and material. This way students can not only focus on the math itself but the learning as a whole.
In mathematics, literacy has a huge advantage over other subjects. Literacy disguises itself in math and stresses a lot of what math already does. Focusing on the how the lesson gets done instead of the actual material really stresses how important literacy is in math. I want my literacy to be diverse and filled with different ways of learning the material I provide.