It's really in Roku's best interest to make building a channel as painless as possible. The path to Roku's continued success is to provide content that users want to watch. Netflix and Amazon are great partners to have on board, but more content cannot hurt Roku. I know I've been sitting in front of my Roku with both Amazon and Netflix content available and thought "Nah, I want to watch something else." That's why it's great to see Revision 3, Twit, etc. on the device. I'm really encouraged to see Roku adding channels periodically. They've pretty much been misses for me so far, but that won't continue to be the case.
While I've been having a good time (albeit sometimes frustrating) developing a channel, I know some folks are really struggling to get their heads around the development process. The simplevideoplayer and videoplayer apps are a good starting point, but there are things in there that I've seen and just shaken my head at (the star rating in the videoplayer for example). One of two things needs to happen: Roku needs to put out a solid, complete player example (search, pin, settings, etc.) or the community needs to do it. The community is going to need time to make that happen. I think the vast majority of us only got into this very recently. I hope I can make contributions, but I don't know that I'll put together a complete example because I just don't need that functionality.
The bottom line is that the quickest way to more channels is to make the channels easier to build. It's a lot easier to have a complete example where all you need to do is turn off functionality than it is to build functionality from scratch.
As far as the value proposition goes, if it was worth the time and effort to develop the channel in the first place that shouldn't change as more tools arrive. If Roku released a channel building wizard tomorrow I wouldn't be upset about the amount of time I've spent on this so far. In fact, I'd be excited because maybe I can get my development done more quickly now.