Maybe I'm stupid but I just don't even understand the point of a change like this. They say that its to simplify things but like...how does this simplify anything? How was a change like this even on their radar? It just doesn't make any sense. If anything this change actually adds a small bit of complexity by forcing another condition to be met in order to use tsubame. The only thing I can think is that they wanted to create some kind of change, however small, to the samurai rotation because as it stands without this change the samurai rotation will not have changed in any way save for -2 shintens in burst and + 1 of the new ogcd. The rotation with this change simply moves a meikyo to be used at some point before tsubame.
Maybe somebody can explain to me the what the purpose of this change is because it simply doesn't make any sense.