I hope universities & employers, students & teachers and exam boards & timetablers will appreciate the usefulness of ½ an A level.
Say you want to become an Architect. A careers advisor would probably tell you you need Physics, Art and Maths. But imagine if you could study Design Technology, Resistant Materials and Human Geography as well.
Or you want to be an interpreter. Your main language might be Italian, but you might want to continue practising other languages, look at the History of Europe and do some Arts too.
AS syllabi content could be revised and new ASs developed, and universities could continue to expect the tariff points. It’d probably be a timetabling nightmare, but…