I just took a quick skim through some newer elements: What's New is great. It's very personalized and friendly even though I am not participating this year in Inktober. Having the resume class at the top is an easy to get back to things addition.
I agree with @von_Nimmermehr but not just for Inktober. When I select the All Courses tab, you have other tabs along the same line that say Business, Colour etc which is good. But perhaps there and as well when we log into our dash board under the laid our curriculum have a Colour Section, a Light/Shadow Section, a Storytelling Section (even maybe I don't know advertise the children Pro there) a Perspective Section etc... (I remember seeing a Master Perspective class I never got around to taking, but you could also add in the curriculum classes that pertain to that section (basic and advanced perspective)), so if someone wanted to just brush up on that they could easily find them altogether. I say all this because at the bottom of the dashboard all courses are a slow search, or scan through.
I did notice on the front page, A Guided Curriculum and Build Your Portfolio are exactly the same. So I find it a bit redundant (sorry ) Perhaps Build Your Portfolio could maybe send you to the Curriculum page and maybe it could have classes that are more geared towards what you should have in the portfolio and maybe have the contests there and maybe even podcasts that could help (on a side note podcasts could be in categories too, but anyways).
Hope that helps (I might add more, I'll keep thinking).