I suggest the fork do at least the following three things:
1) Stop all PoW generation.
How would you solve the fairness of initial distribution problem, without POW?
2) Remove centralized checkpoints.
How else to protect a nascent blockchain?
3) Cap interest accumulation at 90 days. [Incentive to keep node running is much too weak right now.]
I thought that this is implemented:
CBigNum bnCoinDay = CBigNum(nValueIn) * min(txNew.nTime-pcoin.first->nTime, (unsigned int)STAKE_MAX_AGE) / COIN / (24 * 60 * 60);
STAKE_MAX_AGE is set to 90 days.
Inclusion of PoW also defeats the point (it is like PoS but also incorporates the implicit fees and waste of PoW).
waste is an issue. However, what's more important is network security. So introducing PoS is a significant alteration in the resilience level.