Nah, there are many people who play this game while looking into a code (I mean, how else will we find some hidden messages, like, the one that needs a whopping 1000 affinity from Ayane pretty early in game or the one targeted at cheaters that was shown earlier here) and its a bad idea in case the new player and/or future subscriber meet something like this. Considering what subscribers get, there is every incentive to be a subscriber (if you can), everyone else is just good publicity, and publicity have a price.