In fact the ONLY alt coin that has NO expectations of rise, and is working more or less as I describe, is Tether. You cannot really redeem Tether for dollars. So whether it is backed or not doesn't mean shit. People buy tether as a currency. Nobody speculates on tether. So the market cap of tether represents a demand of currency, that is "transporter of value". Slowly, the price sticks: one tether is $1
The price sticks at $1 because you
can redeem it for USD, there's even a market for that on 'finex.
Even if you are right, and somehow manage to launch a crypto that people expect to use as a currency and not for speculation (you'd better not include any other features than pegging, if so, or it will become speculative), then this proposal still cannot work because you can't do anything when the market undervalues the coin.