I'm not sure I understand what your suggesting. With $300 the leveraged instrument wouldn't be creating 100k in value it would simply change in price as though it were 100k in the non leverage asset.
Let me offer an example
If I create a bitAsset called bitUSDx100 it would trade 100x leveraged to the standard bitUSD
Lets say they both start valued at 100BTSX
It doesn't matter what the leveraged asset starts at(within reason), its only function is to move 100x faster than what it's derived from(bitUSD in this case)
Like the ETF UUP and UDN for tradeing the dollar index and ETN's UUPT and UDNT for 3x leveraged dollar index
If the value of a dollar in BTSX moves up 1% to 101BTSX the value of a bitUSDx100 would move up 100% to 200BTSX (because its 100x leveraged)
If the value of a dollar in BTSX moves down 1% to 99BTSX the value of a bitUSDx100 would move down 50% to 50BTSX
So, If I understand correctly these high leveraged bitAssets wouldn't function properly under the current proposed rules of no more than 33% in 24hrs, or whatever it is, because they move too fast.
I'd like to talk about options contracts as well, as they would suffer from the same movements. In addition they have some other problems. It doesn't seem like they would work, if you have to create a new asset for each contract. Its just too expensive. Some other front end system would have to offer derivatives of bitAssets I think. Please correct me if I'm wrong.