Its a good update that brings in Women National Teams.
Sadly it is like a lot of offline things only half made... ☹️
Like you wrote, you can´t use the players when you create teams.
And after you played the Women Championship one time, there is no reasons to do it again because you cant change anything.
But the Mens Championship makes more sense, because you can change the rosters for mens national teams.
So, I would say the update is one step forward, but they could have made bigger and more steps if they really wanted..
About the height limit, is something they should have realised already when they where implementing women teams, but no.....
But Yes, it will be fixed later on.