Or you can have PoW with a reasonable subsidy and use it to secure the network, but then you just have PeerCoin.  Unsurprisingly, Peercoin works because of this and not in spite of this.  Now you've simply opened yourself to all the catastrophic bugs in PeerCoin's PoS system that you refuse to acknowledge.

There are easy applied fixes for hybrid PoW/PoS with low subsidy that involve adjusting the trust of the timestamping of PoW blocks and content of PoW blocks in general -- but again, there are the same PoS bugs which already exist in PeerCoin, which are non-trivial.