Some explanations:
The depth
I see it that way – the ‘A’ author writes a linear story (no deviation). The ‘B’ author reads the story, but in one moment says ‘wait a minute! I don’t like it, it should go that way!’ and add his own linear story.
F.e.
Imagine Tolkien’s ‘Lord of the Rings’ on Chyoa. It’s long story and a good one (maybe too much descriptions and too few females, but for the needs of presentation it will suffice).
So I read it and get to the thread of the council were Elrond says ‘You 9 will go to the mount DOOM and destroy the ring!’. And-Hold on a minute! That’s stupid! The ring is highly radioactive mind controlling artefact! Frodo shouldn’t wear it on his neck (where it has contact with his skin)! It should be in chest – preferably one made from lead. And why walk? You have eagles! Just fly and drop the damn ring into the mountain! It's faster and safer too!
And in this moment I would start writing a monumental linear story. One story two threads, much contents… but if both are boring, then… well… that’s the weakness of deep threads.
The number
Imagine, that you have a first thread of a story as an introduction, with choice ‘is the hero male/female’ in next threads, you choose the hair colour ‘blond/brunette/red/grey’ and we have 8 exit threads (f.e. blond male/red female etc.) next we choose eye colour… and so on and so on. By the time we are finished with character creation choices, the author got bored with writing of all of 180 chapters that described the protagonist in every possible way and started another story leaving this one. I know, it’s very negative example… but still pisses me off. Of course, another author may now find the hero that he/she liked and start writing in one of the threads.
Anyway, personally I prefer writing a linear story with maybe one deviation from it. I don’t like writing too many choices, I have a scenario and stick with it. It’s from other authors that I except deviations, new choices. It’s from them that I except to get some idea, while reading my story, and at some point, deviate from my scenario and write their own... solid scenario. That’s also what I try to do.
P.S. Let that what you see above this line be my contribution to the depth of this thread.
P.S.2. Let that what you see below this line be my contribution to the number of choices of this thread.
In the end I would vote for great middle.
With this vote, can the author of the discussion add that choice ['the mix of number of chapters and depth of chapters'] to the voting (following the spirit of the chyoa)
