I remember when Android first came out, the intents-based Share system seemed revolutionary compared to how sharing worked on every other mobile OS. If it had some rough edges, well, so did everything else in the OS. I think that now, the rest of the OS has generally gotten smooth and polished enough that the general lack of attention to the share system, aside from a few haphazard tweaks, really sticks out as a sore spot. It's about time they showed the share system some UI love. Unfortunately, it's probably too late to do much for it now in the upcoming Android release.