It's probably just me, however, but having only 2 non contest days out of the week kinda sucks for me
So my feedback to all these back to back contests:
Yes, its getting me more engaged with the app.
No, it is not adding entertainment value, especially since I am stupidly staying up to make sure that I rank where I wanted to be.
I'm sure for many others, its extra free stuff added to your regular play, however
I've gotta say that when PerBlue ran contests, it was more fun looking forward to a great contest. Now it "feels" like Gree is running them back to back to milk those extra dollars since they literally do not have any original content that they ever release.