Ugh!! Yep I remember it well. The last talk, [no 5? 6?, whatever]was usually from the "Aid" book [mid 70s] and the Minnistry school instructor was particuklarly hard on those brothers who gave this talk. Anything less than perfection was regarded as a fair target for criticism, despite the fact that the instruxtor was himself an inadequate speaker. It appears that his best "perk" was that he could publically council speakers from the platform.
Eventually, I rotated into the position of instructor. I found that there were those who enjoyed giving talks, and there were those that absolutely loathed it. There were the "naturals" and there were the "strugglers". So some indeed benefitted from council, but others required encouraging, not council. Sadly there was no such set up available.
To be frank, I did'nt like giving council from the platform, although I had to do it I felt it to be too intrusive. Oddly enough, though, sometime in the middle of my term, as a result of a change announced at a District Assy they removed this [wisely, I think] and council was to be administered in private, after the meeting. The problem was however trying to catch the speakers afterwards, since most darted out immediately after the closing song. For which I did'nt blame them, since with two meetings, it was always pretty late, especially in winter.
All-in-all, though, I felt that the Misistry School [do they still call it that or what?] was an excellent idea, and with a few humane adjustments could be made better. Pressure to give talks I think, should be eased. Some people are just not the speaker type. Maybe their gifts lie in other areas, like music. Why not get those who were good at this to sing, Kingdom Songs [of course. No Britney Spears thank you] rather than speak. And the ridiculous subterfuge behind the sisters giving talks to other sisters was, I though being silly. Since the target audience is the whole congregation anyway, not just the other sister, I saw no difference in having the sisters talking directly to the target audience. Again, oddly enough, many of the Elder's wives made better gifted speakers than their hubbies.
Cheers