What will happen is pool operators will patch their code to remove the signature. Miners don't deal with transactions, thats what pools do. So they patch the 4 pools to detect these transactions and remove them. You're going to need to run your own pool for these miners... Then what happens? You're giving rewards on this 2nd chain in the belief that the chain that was used to bribe/destroy btc will be used by BTCers in the future?
There are other countermeasures etc. This has big fail written on it, but good luck. All the VC money being poured into BTC will just make them code around you. They'll implement difficulty in terms of transaction latency or something (no longer having 10 minute blocks). Then your whole idea is thrown out the window like that.
edit - although it'd be ugly to code around you. Blocks would no longer have the same rewards etc if they did difficulty based on transaction latency. Maybe they wouldn't do that, but they'd find something to nullify the effectiveness of this. This would be a better sell to start at the next halving... or other points in the future when the blockreward is smaller.
Honestly i think you should go for it. It will gather attention for DPOS at least.