I dont think you should look at the tokens as fractional reserves, the reserve is merely a tool for liquidity and usually when speaking about fractional reserve the reserve is the thing that gives the value to the coin which in this case it isnt. its just the market depth for liquidity in this case or atleast thats how i see it from what i read
Collateralized token is very nice thing which has a number of use cases and reserve can provide some liquidity, which will depend on its size. You can manage liquidity with a smart contract by keeping constant CRR, or you could use this reserve to put buy/sell orders on exchange and manage it with a trading bot, the result would be the same. But saying that 1% of reserve will make a token fully liquid is a complete bullshit. Also, if token B is backed by token A at fractional CRR, it does not make sense to use token B as reserve for token C instead of using token A. This is an infinite money multiplier.
Two things
One, keep in mind that the BNT token itself will not hold a 1% reserve. Ours will be much higher. Also, a 1% reserve is equivalent to a 1% market depth in an exchange (the use case is very similar), and with 1% market depth is a big exchange. Its not fractional reserve because the value of a smart token is not based on the value of its reserve tokens. They're just there so the smart token's contract can trade autonomously and therefore keep its token fully liquid.
Two, the reason that BNT will be the preferred reserve currency is network effects: The more smart tokens that use BNT tokens in reserve (which will be the default setting for smart token creation in any Bancor developed or financed software service), the more valuable and more in-demand the BNT token becomes. As the value of BANCOR rises, so too does the value of every smart token holding BNT in reserve. And, because we’re both the most knowledgeable about the technology behind the Bancor protocol and have first mover advantage in building on it (including over a year working with a large developer team on building the first Bancor software service UX, seeding token changers, high-potential community currencies, and popular token baskets with BNT tokens), anyone forking would need the economic incentive and the ability to surpass what we’ve built, or else will have created an inferior network with little incentive for others to use it. (This can be compared to Ethereum, where the success of any solution that uses ETH appreciates Ether value, benefiting the entire Ethereum network).