l don't compare it to Haruhi cuz thats an insult, there are similarities, but wich anime isn't similar to another one ?
l want Tenshi to show us her character, she isn't controlling this world wich was proven with her demotion, l really would like to see her joining Yurippe now, if l'm at least slightly correct l think yurippe would be the only person who could help her move on, if l'm wrong, still aquiring her into the group and starting acting more responsibly would help them.
reusing the old trick was necessary, they use it to get the food tickets after all, the NPCs won't die if they skip a few meals, after all.
Otonashi altough not having his own memories, probably only relies on instinct and common sense right now, and bases his judgements on observations or everything taking place around him, dunno if you noticed but hes still unsure if what Yurippe is doing is the right thing or not, hes helping them because he doesn't want to dissapear, but tbh they don't really know why, l mean, if l became a worm in my next life what does it matter? l won't remember the after life, nor the life before it, who knows, maybe those that dissapeared became much stronger now and will have a decent happy life (hell l don't belive what l'm writing) that is a possibility aint it ?
they revolt because they hate the way their life went.