When I played with my first team starting from season 7 or something we still had four divisions where there were many new teams you could compete with relatively fast even as a newcomer.
Today, the case is that we have third divisions consisting of bots, very experienced players with good teams and new teams. It takes a lot of time for those new players to reach the level where they can seriously compete with the elite of their league, and I'm positive this situation is what often makes them leave the game - crushing the bots and getting equally crushed by the older teams most likely gets quite boring quickly.
Thus, in my opinion, some kind of merging of the leagues wouldn't be a bad thing. Additionally the competitive spirit between us Scandinavians could bring more joy to the game. Obviously though, this is only my own opinion, and I don't represent the entire country.