@albicocca - thanks from me also for starting this thread.
I do think the dust needs to settle and then see where we are, there is a lot of sense in sewingbeefan's comment.
DS3 heading into Y13 - two week's today (gulp). Whilst his eldest brother is an Oxbridge grad that is not a route he'll be taking; but I certainly feel for those with that mid October deadline looming.
I feel the DCs; parents, schools need - and relatively soon - some actual numbers, or at least a really clear indication, in terms of how many of those now ending Y13 have deferred a place, where and what course. Someone referenced Durham earlier, and so for History it would be useful to know typically the number starting History at Durham - I know Durham publish a lot of admission stats, - I've not looked but to keep the maths simple lets say typically there are 200 History freshers. For 2021 entry how many places are now allocated for deferred students. If its up to a couple of dozen well that makes competition a bit more intense but not the end of the world, if its heading towards three figures that's a whole other issue. At the moment none of us have any idea - and we are all quite possibly assuming the worst.
If there are a lot of current Y13 deferrals will that lead to more of our DCs heading into Y13 thinking about deferring or applying post A level with the knock on implications for those who've just done GCSEs , heading into Y12 and potentially facing a similar issue.
The other thing that struck me is that there has been significant GSCE grade inflation this year - more so I think than A levels. So any of our DCs who may decide to apply post A level may be looking at a situation, admittedly for a minority of courses and Unis, where GSCEs are more of a factor in deciding on offers.
Finally, and sorry to go on, these issues are likely to be of greater significance for say applicants to top quartile / top third Unis as opposed to those perhaps seen as less desirable; or indeed for applications to more niche but very highly regarded courses at generally lower rated Unis sorry that sounds snobby, but the notion that every Uni is as good as any other just does not hold up in the real world.
And really finally, and I genuinely hope this is not the case, are some of those Y13s maybe heading in September (or deferred to next year), perhaps unexpectedly if they were being totally honest, to an aspirational choice that may for some lead to struggle and possibly dropping out. That could also be an issue for inflated GSCE results, particularly in a subject like Maths where the step up to A level really is unforgiving.