I haven't played Unlimited Codes, so I do not know. However if you don't have the motivation then I don't know what to tell you. But Heaven's Feel is the route where everything you can possibly imagine hits the fan. It is stir all of your emotions and leave you in awe when it's all over. But I do have to revise what I said earlier because we obviously do not know how much of and what from the novels they will cover. But the novels do go into stuff from Heaven's Feel, so yeah.
And the air date is sometime this year, that's all we know.
I'm going on a picnic!