I was skeptical about changing the voting system and I think it's understandable that people are critical of changes to something that has a long tradition but now I am happy about this change. Not all Swedish changes are bad.
Now that the show is over, I think we can agree that this voting system is indeed very exciting. It depends on the year, of course. This year was perfect because the winner was not known until the end and there was no clear favorite to win the show. With such a result, this voting system is perfect. With a clear winner, it would be less exciting but not worse than the old system. Seeing how different the juries and audience vote for countries like Poland and Austria is part of the fun.
So they definitely should keep the new system but I think it should be further optimized.
I don't like that only the 12 points are read out. This year, the votes went to many different countries and a large part of the juries didn't just support neighbors. Who expected the 12 points from Norway to go to Italy and Sweden getting nothing? But I don't like that the new system only focuses on the winner. It would be nice to read out the top 3 again. I understand that they need to save time but I think it would be better to cut the unnecessary chitchat and compliments. That was scripted anyway.
I was only focused on who got the points this year and didn't pay attention to what they were saying anyway. I also lost track of the lower placed countries. So slowing this down would be better. It wouldn't be a big loss, if we didn't hear "What a great show tonight" or similar things anymore. Cutting that is a better way to save time.
I also think it would be nice to show a map that indicates where the votes come from. The countries that vote for an entry could light up and the brightness could indicate the number of points. A different graphic system achieving the same result would be fine too but I would like to see where people voted for an entry. This would make it less anonymous. I think the EBU probably prefers to avoid this because it would highlight the diaspora vote and the EBU is probably happy they can hide it with the new system.