Some of what you ask about is spelled out in the plan from which I only took one sentence, but you asked for my thoughts, so here we go.
a) I don't see this passing until January, 2023.
b) Sliding scale about $125k, just like so many other plans are phased in/out. Not a deep secret.
c) Pretty sure this should increase selectivity in the flagship colleges for most states, while having a negligible impact on the less prestigious institutions.
d) It is less that I see jobs increasing as a result of this, though at those colleges they will, and more that I see a higher number of graduates prepared for the new jobs otherwise being created, assuming there is also a climate program of some sort.
e) We already have a major squeeze in the small, not-well-funded colleges in much of the US. I doubt this will help them to withstand the twin financial squeezes of rising costs and shrinking student body, but I am not sure that things will get all that much worse for them, given the projections I have already seen of their situation. Maybe a year or two's acceleration, but nothing on the grand scale.
f) Control over local education?! How do you figure?! Unrelatedly, I think, under both the latter Sec'y under Obama and Trump's deVos, the DoE tried to get involved in what a credit is and other such things. Under Trump, at least we have not seen the return of No Child Allowed Ahead.
I would not have guessed that anybody wanted federal control over local education, but NCLB proved me wrong.