So if the next step could be that the max block a year is the same in every EU state then we are all an equal terms.
Then you would have to look at paychecks, then cost of living, then...
I think it's not that easy to put everybody in equal terms with such a big difference between states: income, labour rules, taxes, etc.
Although I think we should thrive to have equal terms within EU, that should come with everything else attached to it.