“I notice, for instance, that Paul didn’t continue his thought with “... and feel free to make up more going forward.”
Why would he? Your comment is based on a premise is it not? Go ahead and state the premise. Your premise can only be the following: “Gee, we all know Catholics make stuff up so when they cite St. Paul on tradition they must assume he meant that it was okay to make up stuff and pass it off as sacred tradition.” Isn’t that what your suggesting?
I'm suggesting that you open yourselves up to that accusation when you justify every tradition that's come down over the last 2000 years by claiming that Paul proactively okayed it with his statement regarding traditions that had been established up to that point.
By the way, I don't have any problem with new traditions developing, as long as they don't contradict scripture (which is, incidentally, the actual meaning of sola scriptura, in contrast to the way it tends to be misportrayed in these debates).
you're getting the idea.