I thought twelve was enough.

Yes, I think it was enough to get the story across, but I don't think adding an episode or two would have hurt either.

maybe 6 more episodes...

I liked how short and sweet everything was- there were no fillers, everything was done to further the plot. I feel like if there were more episodes added to the main series, it would lose its impact as the anime as a whole was very punctual and dramatic.

I'm very satisfied with just 12 episodes. It makes it possible to marathon within a day (which is what I did my first time watching it) and it also makes it to where there's no filler, and that's always a great thing.

More episodes for Modoka and Sayaka to survive. I want the ending that all 5 magical girls survive and Kyubey's alignment change from bad to good. If the alignment of Kyubey did not change. Kyubey need to be defeated.