I've spent basically the last ten years or so of my life being good at exams. Coping with the pressure, the recall, the various exam-specific techniques, and so on. I once walked out of a three-hour exam in University-level mathematics and it was probably the most rewarding experience I'd ever had in my life up to that point.
I'm good at exams, basically. At this point I've given up on modesty, and I'm sorry, but I am proud of how good I have been at exams and I'm seriously chuffed.
I still think this is potentially a very good idea. The thing about exams is that often they test how good you are at exams, far more than they test how good you are at the subject. If you don't know your stuff at all you are buggered, of course, but if you only know it partly then you can still eke out a good mark despite it -- and conversely, some of the people who know their stuff brilliantly just crumble under the pressure of having to recall it in an intense period. And the worst part is that because exam-based skills essentially have no use outside exams, what is the point? You have someone who basically looks worse, or better, than they actually are.
As a couple cases in point from my own experience: I had an exam a few years ago in a course I just hated and couldn't get along with. All the same, I revised it a bit, but gave up after the first few pages and just wrote off the result. Guess what came up? Material from the first few pages, and so I got a strong 2:1. Frankly I didn't deserve that grade for that course, as I essentially did not know 95% of the material. Got stupidly lucky.
At the other end of the scale, and I hope she doesn't mind my sharing this, we have my mum. A very intelligent and capable woman. Hopeless at exams though. Since this was back in the 70s so they didn't have resits it cost her more than it should have. But she's also incredibly hard-working and great at her job. Her being crap at exams doesn't matter, as the skills she needs for work and the skills she'd have needed for exams just don't overlap at all.
So, exams make me look good and her look bad. Frankly, this is grossly unfair, and if anything it should be the other way round.
Exams are all about technique, far more than they are about knowledge, and any debate about this proposed change should reflect that basic fact.