I want Martin to keep skating for the Czech Republic so I'm not thrilled by that idea. I think he has a longer future ahead of him than Anna and Radek. Plus I don't think changing partners too often is good for any pair or dance skater.
I haven't formed an opinion on Anna and Radek yet, for the simple reason that I haven't seen them skating together yet. But, I agree with everything else you have said.
With regards the final sentence, I recently made a Fan Fest for a skater who has been doing Ice Dance alongside his Singles skating for quite a few years. And he has literally had a different partner every season. (Well, strictly speaking, it was 5 partners in 6 seasons, because he had a season just doing singles in between his second and third partners).
That really can't be good for making progress in your career.
This season, he jacked in the Singles skating, got a foreign partner for the first time, and switched to representing her country. And they have been looking very promising. However, a couple of weeks ago they withdrew from a competition in his home country that he always does. And I instantly thought "right, that's another partnership ended". (I should add, this isn't based on anything other than his history).
I don't want to see Martin potentially get into that situation. If I were him, I would stay with Hanna for another season, and then have an evaluation of where they are at. That way, they can not only gauge if they are progressing at a quick enough rate, but they can also see where they are in relation to Anna and Radek. And at the end of next season, they will have a better idea if there is milage in this partnership.
Unless you just aren't getting along with each other, one season isn't enough to make an informed decision on whether a partnership has a future. You are still learning about each other in your first season together. You need at least 2 seasons to get a fuller picture.
But, that's just my thoughts.
CaroLiza_fan