I suppose people have a point with the people will write down EVERYTHING. But still, I really think it takes a really slow writer (like me) to appreciate how frustrating it is, some people maybe finish about on time, maybe don't get enough time to read back through everything thoroughly. But for me most of the time it's a struggle to finish in time, I remember my science GCSE's 1 set of exams was longer then the next set, I got A's in the first ones even though I didn't finish on time, then the next one I left like a good 10% of each paper, and got all High B's. So annoying. Not only that I have terrible handwriting, so I have to take my time with that to. I remember after my GCSE English paper my wrist was hurting so much I couldn't use a mouse the rest of the day, no exaggeration, not disaster I had trackpad lol but still.
So yeah, no 3-4 hour long exams, but with some exams an extra 10-30mins would help immensely! I'd say a 2 hour cap on all exams, even Maths I run out of time lol.
An interesting statistic though my psychology teacher told me. The national average for the last section of the unit 2 paper is 8/24, though it's the easiest section as you can guarentee what questions will come up!