I don't think it's a case that they went out of their way to make it difficult. Just that it was an already difficult process that they left open for us to use. They could have locked it down I imagine. It would likely take a fair bit of time and resources to create something that would be considered user friendly.
As for why they are not available. I for one am not hanging for new sheets. Give me new content, more monsters, more character options, equipment, spells, mounts. These are the things I would like to see more of which means there are two things I personally hope they are doing...
- Chasing a license with WOTC
- Working with popular 3PP companies to bring us more content
I suspect a number of people would have similar priorities.