I agree that universities will not be keen on the loss of AS levels. Yes, international students and those taking the IB or other qualifications like access courses where there is no AS equivalent are generally admitted no problem. In these cases, where applicable, GCSE results tend to be looked at more closely, to see if they correlate with the students current predictions. However, it is my understanding that the majority of students still follow the A-level route.
In the past, when AS grades didn't have to be declared on university applications, schools often massively overpredicted the A2 grades, meaning applicants got offers that did not really match their actual ability. This isn't good for universities, or for students who end up with offers that they have no hope of achieving. The requirement to "cash in" AS levels was supposed to help stop this, I believe.
However, I am sure universities will find a way around it. I imagine GCSE results will become more important again, as these will be the only actual qualifications that applicants have to demonstrate their abilities. Unfortunately, as these are being changed, the GCSEs of the children in the new system may not be indicative of their true ability. This will make things quite difficult for admissions tutors for a few years.
Also, removing pretty much all the coursework from GCSE and A-level will probably mean students are very unprepared for university study, where coursework is usually an important element of the course.
Does anyone know what is happening to things like the extended project?