The system seemed to be working quite well the last couple of years, enough interesting entries even if not all qualified for the final. The worry is it could encourage more cheap songs. The controversies over the jury results seemed to have an impact. But having decent entries should be more important than always having fair placings, the competition aspect is overrated anyway. You'll never get ideal qualifiers/placings, and juries will always have some chicanery.
I like the global vote as it encourages more of a stake in the contest from other audiences. It would be nice if after the contest they gave a continental breakdown of that vote.