Our BitAssets are successful in making sure the value never drops below the price feed that the asset tracks. (This is because anyone can force settle BitAssets for BTS if there are no willing buyers)
In fact, the value of bitAssets drop below the price feed quite often. But yes, you can force settle them (with delay, offset and volume limit), so it is easy to correct the price when it drops below the feed.
If we want people to use BitAssets surely we need to fix this.
Exactly! And to fix this, we need to fix margin trading mechanics, which is awkward in BTS. Then, all those margin traders will hopefully come from other exchanges and issue a hell of bitAssets on us.