For what it’s worth, the specific implementation here seems far superior to how I understand 4e skill challenges.
We have used variations for the social pillar and for some puzzles where we focus on Investigation and Knowledge etc and it works well, we have had much fun at the table.
I must though experiment more with some explorative kind of skill challenges as I'm not as confident and quick in the implementation.
And I recall in some older threads some of the 4e enthusiasts here were spinning off some pretty awesome Fail Forward skill challenges fairly easily. That is where I'd like to be.
Here’s a question. What if the players had combined 2 or 3 or 4 or all of the counter arguments into their first counter argument? How would that have been handled?
This is a great question and it is something that has ocurred in the past.
I have tried to as GM-to-players to have arguments and counter-arguments remain ON TOPIC and not thread to other areas.
Think of it as turned-based arguments, but to be honest I'm not happy with such a "forced" solution.
But to seriously answer your question, if a player had their character touch on all arguments within the very first response or an earlier response, then I would have the giants make their counter arguments and have them roll their persuasion checks.
Which I do not believe is something the players would desire, as they have more influence on their rolls than on others.
I have an idea of how I would work the math (I would likely explain my logic to the table, get their input)
Likely something like this
2 Arguments (PC gains success with the argument they countered and puts forward 1 argument)
PC check 15-20 - DC 15 required by the subsequent giant
PC check 21-25 - DC 16 required by the subsequent giant
PC check 26+ - DC 17 required by the subsequent giant
3 Arguments (PC gains success with the argument they countered and puts forward 2 arguments)
PC check 15-20 - DC 14 required by the subsequent giants
PC check 21-25 - DC 15 required by the subsequent giants
PC check 26+ - DC 16 required by the subsequent giants
4 Arguments (PC gains success with the argument they countered and puts forward 3 arguments)
PC check 15-20 - DC 13 required by the subsequent giants
PC check 21-24 - DC 14 required by the subsequent giants
PC check 25+ - DC 15 required by the subsequent giants
I'd allow the PCs counter (with a valid argument ofc) against the giant Successes, but that would turn into a contested roll, they'd have to beat the giant's DC.