The key word here is debatable. Britain being a great power is not debatable, it was. Bosnia being a great power is not debatable, it was not. Portugal? I think most people would say it was, but it's open for debate and not something concrete. Much like Venice, which is also open for debate, or you mention Sweden, which one could probably argue due to their short time in the sun and implosion early into the 18th century even if I disagree. Portugal was not a Russia or France; their status as a great power would depend on the definition of one, and it could be "debated" that they never were. Nothing really against Portugal, and in fact I'd argue the impact they had and legacy of them and the Netherlands in spite of their size should be a point of pride, not a contentious way to leave a thread that you'd spammed pages before.
But that's neither here nor there really. I think Portugal was a great power, and I think Portugal is fine in the game... and I think the end node change won't change their AI failures because those failures are not really about trade wealth at all but rather the inability of the AI to handle land-based over-water warfare, the absurdity of current naval combat, and the foolish willingness for AI to join wars where a more powerful and friendly neighbor is on the enemy side. Some traded ducats flowing east won't change this.