As soon withdraw/deposit is fixed on cryptsy a higher volume (up or down?) can be expect.
A few more exchanges would be nice, i am voting for PHS on
https://www.mintpal.com/votingBtw. i had my thinking on the the optimum rate of stake by guessing ca. half of it will be fresh liquidity for the markets.
Only time will tell how lower or higher interest as with Blackcoin (1%) or Mintcoin (20/15/10/5%) will perform,
but PHS makes me a perfect answer to Mr. Ackermann (Banker), who insolently claimed 25% for his biz.
I watch most of the PoS based coins to see real world examples, as its very interesting to me long term. 50% sounds high traditionally when comparing to 'real world assets' ie. savings accounts, bonds, stocks, etc... in cryptos, however, you factor in lost days from tx's, exchanges and pools not staking, and the big tx fee destruction (right now its .01 per tx or 1 stone per 100tx standard tx, lost or forgotten paswords/wallets, And you get closer to 15% or less? Just monitor current money supply and come to your own conclusion, will we hit 2 million at 1 year? Compare this to bitcoin inflation 2nd year was 100%!
1% with fee destruction and you'll have deflationary crypto. If we went PoS only, stone creation would be very very low, too low really (for now), it may already be a liquidity problem and why high money supply coins have been doing quite well. (blackcoin 75 million is even small to some of these newer ones)
Ultimately, It's really up to the userbase, PHS is open source and open for other developers too. I think even a reduction to 25% and removal of PoW would keep the stone supply constant. Factors such as increase TX usage would make it deflationary even now quite easily (with larger adoption or even a simple site like dice).
as far as my estimates based on some querries run on the chain, about 80-90% of pow created stones are sold very quickly, with 10-20% of PoS being sold. IE stakers tend to reinvest, miners tend to sell.