Hi Dave,
Glad you like the iFly. The terrain avoidance feature is moving along. The data we're using for this feature is publically available, so there will not be an aditional charge for this. As long as you are subscribing to our data updates, when this feature becomes available it will be a simple software update on your iFly.
Regarding sectional resolution: Honestly, this is the first time someone has asked for this. The charts are extremely high resolution. When you zoom into "zoom level 4", the displayed chart is about the same size as a printed sectional. But you can more than triple this resolution by zooming all the way in. Attached is a screen shot at zoom level 4, and zoom level 2, as an example. Does the resolution you're seeing seem to differ from this?
Thanks,
Walter