This proposed system sounds like a recycle of the old system that the British had established here where students sat for KJSE in form 2 another exam(common entrance?) in form 4 and another in form 6.
I was reading the Sunday Nation column '30 years ago' yesterday. Minister Kamotho is quoted in 1982 proposing changes in the education system so as to have a new system with fewer exams and one which would make students self-reliant.
I am not sure more exams will help in any way. They will just help teachers insist on your child going for weekend and holiday tuition from class 1.
However, the return of technical subjects is good. I think the new system is worth implementing.