Is it truly that bad though? The way I look at the situation, if I was to associate the title with a theme, death would take the cake for me. It's a reason why some people wear tags, because otherwise they would be completely forgotten as if they never existed. So summons requiring a sacrifice makes sense to me because it would fall in line with the death theme.
One more thing, within the storyline, there is at least 3 times where a character or more has to die during a mission to continue on the plot.
Are you saying that death is a requirement in this game for multiple purpose? Where is the fun in that?