I don't like the channel-as-an-app concept. I don't want to fire up the ABC app to watch one show, and some other network's app to watch a different show. Especially when I don't often know which shows are on which networks anyway. I just know I like a particular show. So I like the way shows are currently categorized on the ATV. Right now, you can pretty much get whatever show you want, and it works well. The problem is pricing.
First, there's the per-show price. $2.99/episode. I actually don't have a problem with this. Initially I was thinking that this price needed to come down, but now I've reconsidered. Here's why: The per-show price is for people who are already watching/DVR'ing the show via cable but somehow the DVR screwed up and they missed the show. So, on rare occasions, you go in and buy that single episode you missed. For rare occasions, $2.99 is bearable. There is a way, though, that the price could be improved while keeping the networks happy: Offer a version with ads (which, unfortunately, you won't be able to skip past). Maybe it's one ad, or a just a few ads, compared to the number of ads you get with regular TV. So, the ad-free version is $2.99, and the version with ads is $0.99-1.99.
The bigger problem is season pricing. If I want to drop cable and subscribe to the shows I like, the total cost needs to be competitive. As others have mentioned here, anyone wishing for costs to be dramatically cheaper than cable are dreaming. The ATV solution will be more pleasant to use, but it won't be cheaper (by much, anyway). And it might even cost a bit more. But it shouldn't be dramatically more, or it will be a non-starter. That's the situation we're in now. iTunes offers pretty much everything, but the season prices are too expensive. They discount that $2.99/episode cost quite a bit when you buy a season, but it's still way too expensive, once you start adding up the multiple shows you like. The current season of The Middle costs $45. Previous seasons cost $40. A typical season consists of 24 episodes. That's just over $2/episode for the current season, which is a significant discount, but wait...If you watched just three different shows each day, that's 21 different shows. 21 x $45 = $945/year = $78.75/month. What's worse, you're potentially going to get hit with that $945 charge the first month (and then pay nothing for the next 11 months), if you jump into the iTunes ecosystem at the start of a new TV season.
Some realistic improvements that can be made:
1) First, some of these past season prices are more expensive than buying the season on Blu-ray. That just doesn't make any sense. The 2nd season of The Middle cost $25 on Blu-ray thru Amazon, but $40 on iTunes. The iTunes price should be no more than $25, and I'd say that $20 is more realistic, since you're not getting a physical disc, compression will be higher, and there is DRM (which I'd like to see go away, but won't hold my breath for that for a while).
2) That's fine for old seasons you want to own, but if we're talking about getting rid of cable TV, you want the current season, and for that you'll pay a premium. Fine, but $45 for the current season, once you add up all the other shows you watch, will be too high. So let's get that price down, too. Say $25-30 ad-free and significantly cheaper ($10-15?) with ads. And you can upgrade your ad-filled season to an ad-free season at any time.
3) The first episode of every show should always be free (albeit, with ads). This should be a requirement, and it's for the networks' own good. There are lots of shows to choose from that I might like, but I'm not going to pay $3 to find out. They don't need to make the first episode of every new season free, just the first episode of the 1st season will suffice.
These are mostly easy tweaks to pricing that could be made without needing to drastically reinvent the business model. The ads, though, would be a significant change from Apple's current iTunes TV show purchase business model. This would be a revenue sharing thing, with the networks getting a percentage, Apple getting a percentage, and the user getting a lower price to purchase the show.
Beyond that, we also need to accommodate some live programming. This would just be needed for news and live sporting events. They've already made inroads into sports with MLB.TV and others via apps, and I think that works, but we need to get the NFL on-board, and we need to make sure PQ is top-notch. I purchased the highlights of this past season for one of the NFL teams and wasn't happy with the PQ, and that was pre-recorded, so there was even less of an excuse for the PQ to be so poor.
For live news, high-bitrate video isn't as much of a necessity, IMO. But how are they going to deliver local news? This gets tricky. But here, too, I could see this being delivered via an app that your local news network offers. As an app, they can control the video feed and PQ, and they can include commercial breaks.
Of course, for weather, Apple can include built-in weather functionality, a la what they already offer on the iPhone (though hopefully better, including radar, more details, etc.).