I dont agree with you krishna....
I have given one attempt when there was no gap between exams... It actually exhausts all your energy... I agree full book cant be read in one day. But you can surely read more when compared to half day....
Again, you will have time to refresh your mind & become mentally ready for the next paper.
Third point is it helps a lot to those students, who have to travel a long distance from place of residence & exam centre... I need to travel 30 kms from my home to exam center... Around 3 hours are just spent in travelling to & from the exam hall... Now, you can advice, such students can stay in hotel room near the exam hall... I am continuously studying by sitting in my home, where i feel very much comfortable (I think all will feel so). If i stay in hotel room just for exams, i may not feel comfortable there.... I hope u understand what i mean....
Reagarding no choice, i agree with you that it was a hard decision taken by ICAI.... But it has not effected me much.... I failed when there was choice. But cleared when we had no choice.... Again, i didnot face any problem in answering any paper simply because there was no choice.... I was able to attempt same number of questions as before.... To be frank, it saved my time, because earlier i was spending much time on deciding which question to leave in choice....!!!!! Now that problem is not there... So could write more in that time.....