I bet on Blackcoin as soon as I heard it had 100% proof of stake, + this mining scheme you are thinking of implementing. Blackcoin is doing well so far. I suspect all of its success is due to these two factors. Interesting to follow the experiment. 
At 30 million now. FML I lost 3/4 from Cryptorush. Still way ahead from that investment though. Every second lost on this goldmine idea is monay out da window.
We should propose to team Invictus to make this part of the official marketing initiative. They have the ability to contract out writing the code. What needs to be done is you need a bunch of pools set up quick right after the launch and just follow the Blackcoin growth model. I think at this point Blackcoin is proving itself to be the next Litecoin and I had wanted Bitshares to go along for this ride.
It's not too late. If Bitshares becomes liquid in the next few weeks then we could have pools up within days. Collaborate with the Blackcoin community so that the pool pays out in Bitshares and Blackcoin as a hybrid. Do not compete with Blackcoin but instead join forces.
At this point Blackcoin is now like a POS Litecoin. Miners are happy, investors are happy, fixed supply, minimal inflation, dump resistance. There is talk that each Blackcoin could be going for $2-3 a month from now and who knows what it will be in the future if people hold long term.
Bitshares would be even more dramatic because it's got only 4 million compared to 74 million or so Blackcoins. Bitshares also is deflationary, so it has no inflation at all. I cannot see anything being able to compete with Bitshares technologically and the only thing Bitshares needs to do is win the miners and investors as Blackcoin is doing.
Look at this post from the Blackcoin community:
For those saying we are going up without reason and it is a pump/bubble...think again.
There is looking to be a direct correlation between the multipool growing and BC price increasing.
Over the past 3 weeks it has roughly worked out to about a 7k price increase per 1 GH/s of multipool mining power. Recently this ratio has increased to about an 8k-9k price increase per 1 GH/s increase in the multipool. Also, this is not taking other Blackcoin multipools into effect, just the official one which I've been watching day-in/day-out.
So the more miners, the higher the price. Simple, rational, logical.
I speculate that we are just starting to get LTC miners here and look at the size of LTC mining.
Overall, we will be in a speculative frenzy/bubble when the mining power more-or-less baselines while price rockets.
And that will personally be my first sign to take some profits at least in the short-term.
Blackcoin has dump resistance as a result of science. Hype is fuelling the rate of growth, but if you can't dump it out of fear that the price will go up overnight, and with no inflation to ever give anyone a reason to dump it, it's almost the perfect store of wealth. You have at least a billion dollars of wealth that miners and investors want to park somewhere and Blackcoin could in theory attract it all.
Bitshares has to move fast to capture some of that market cap and demand. Bitshares could be better than Blackcoin and it seems the best form of marketing to miners and investors is profitability. If your coin is more profitable to mine and hold, you win. And if it's harder to dump than others, then people tend to hold it for longer. These are just observations I'm seeing from studying Blackcoin and I recommend everyone from this forum study the Blackcoin phenomena.
It might have been designed to look like a pump and dump, but it's designed to be incredibly difficult to dump due to the mining creating buy walls.