I'm surprised no one has pointed out that you can lie: when your opponent guesses your set, change it to something that's consistent on the sequences classified so far.

I had considered than and assumed that unless the sequence is recorded before beginning changing the sequence as specified must necessarily be allowed.

Obviously, the more one is forced to change their sequence, the more complexity they must add. Changing the sequence in real time to be coherent with all the things you have said so far would if anything be more fun and better practice. :)

I was serious about practicing being reasonable as well as reasoning. It's kind of sad that no one seems to care about that.

Bollocks. A 'reasonable' application of 'reasonable' is to discussions on complexity of the sequence specifications. It is not, as you said, about who can apply the most fallacies in support of their absurd description. It is not reasonable to expect people to pretend the entire scoring system is not broken when it would be rather simple to fix.