Groko's been doing some work on the POS miner through the YACoin client. Looks like he found a world around to some of the long-term concerns. I thought I would share the link here to increase awareness. I believe he recently made a pull request to have this items added to the sourcecode.
http://yacointalk.grokonet.com/t/pos-mining-performance-boost/67More excellent additions by Groko! Well need some community consensus on this, so everyone that can, please provide your opinion.
I was asking this feature long ago! So I'm for it.